» Javascript equivalent for PHP's file_get_contents

399 PHP equivalents

PHP to Javascript Project: php.js

php.jsThis article is part of the 'Porting PHP to Javascript' Project, which aims to decrease the gap between developing for PHP & Javascript.

A lot of people are familiar with PHP's functions, and though Javascript functions are often quite similar, some functions may be missing or addressed differently. The Javascript implementations should be as compliant with the PHP versions as possible, a good indication is that the PHP function manual could also apply to the Javascript version.

Porting crucial PHP functions to Javascript can be fun & useful. Currently some PHP functions have been added, but readers are encouraged to contribute and improve functions by adding comments. Eventually the goal is to save all the functions in one php.js file and make it publicly available for your coding pleasure.

If you choose to contribute, let me know how you want to be credited in the function's comments. You may also want to subscribe to RSS so you receive updates whenever new functions are posted.

This is a Javascript version of the PHP function: file_get_contents.

I have moved out PHP.JS to it's own site. For info & reactions on comments please goto phpjs.org

PHP file_get_contents

Description

file_get_contents - Reads entire file into a string

string file_get_contents( string filename [, int flags [, resource context [, int offset [, int maxlen]]]] )

This function is similar to file(), except that file_get_contents() returns the file in astring, starting at the specified offsetup to maxlen bytes. On failure,file_get_contents() will return FALSE.

Parameters

  • filename

    Name of the file to read.

  • flags Warning

    For all versions prior to PHP 6, this parameter is called use_include_path and is a bool. The flags parameter is only available since PHP 6. If you use an older version and want to search for filename in the include path, this parameter must be TRUE. Since PHP 6, you have to use the FILE_USE_INCLUDE_PATH flag instead.

    The value of flags can be any combination of the following flags (with some restrictions), joined with the binary OR (|) operator.

    Available flags

    Flag Description
    FILE_USE_INCLUDE_PATH Search for filename in the include directory. See include_path for more information.
    FILE_TEXT If unicode semantics are enabled, the default encoding of the read data is UTF-8. You can specify a different encoding by creating a custom context or by changing the default using stream_default_encoding(). This flag cannot be used with FILE_BINARY.
    FILE_BINARY With this flag, the file is read in binary mode. This is the default setting and cannot be used with FILE_TEXT.
  • context

    A valid context resource created with stream_context_create(). If you don't need to use a custom context, you can skip this parameter by NULL.

  • offset

    The offset where the reading starts.

  • maxlen

    Maximum length of data read.

Return Values

The function returns the read data or FALSE on failure.

See Also

Javascript file_get_contents

Source

This is the main source of the Javascript version of PHP's file_get_contents

function file_get_contents( url, flags, context, offset, maxLen ) {
    // Read the entire file into a string
    //
    // version: 906.111
    // discuss at: http://phpjs.org/functions/file_get_contents
    // +   original by: Legaev Andrey
    // +      input by: Jani Hartikainen
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   input by: Raphael (Ao) RUDLER
    // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: This function uses XmlHttpRequest and cannot retrieve resource from different domain.
    // %        note 2: Synchronous by default (as in PHP) so may lock up browser. Can
    // %        note 2: get async by setting a custom "phpjs.async" property to true and "notification" for an
    // %        note 2: optional callback (both as context params, with responseText, and other JS-specific
    // %        note 2: request properties available via 'this'). Note that file_get_contents() will not return the text
    // %        note 2: in such a case (use this.responseText within the callback). Or, consider using
    // %        note 2: jQuery's: $('#divId').load('http://url') instead.
    // %        note 3: The context argument is only implemented for http, and only partially (see below for
    // %        note 3: "Presently unimplemented HTTP context options"); also the arguments passed to
    // %        note 3: notification are incomplete
    // *     example 1: file_get_contents('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm');
    // *     returns 1: '123'
    // Note: could also be made to optionally add to global $http_response_header as per http://php.net/manual/en/reserved.variables.httpresponseheader.php
 
    var tmp, headers = [], newTmp = [], k=0, i=0, href = '', pathPos = -1, flagNames = '', content = null;
    var func = function (value) { return value.substring(1) !== ''; };
 
    // BEGIN REDUNDANT
    this.php_js = this.php_js || {};
    this.php_js.ini = this.php_js.ini || {};
    // END REDUNDANT
    context = context || this.php_js.default_streams_context || null;
 
    if (!flags) {flags = 0;}
    var OPTS = {
        PHP_FILE_USE_INCLUDE_PATH : 1,
        PHP_FILE_TEXT : 32,
        PHP_FILE_BINARY : 64
    };
    if (typeof flags === 'number') { // Allow for a single string or an array of string flags
        flagNames = flags;
    }
    else {
        flags = [].concat(flags);
        for (i=0; i < flags.length; i++) {
            if (OPTS[flags[i]]) {
                flagNames = flagNames | OPTS[flags[i]];
            }
        }
    }
    if ((flagNames & OPTS.PHP_FILE_USE_INCLUDE_PATH) && this.php_js.ini.include_path &&
            this.php_js.ini.include_path.local_value) {
        var slash = this.php_js.ini.include_path.local_value.indexOf('/') !== -1 ? '/' : '\\';
        url = this.php_js.ini.include_path.local_value+slash+url;
    }
    else if (!/^(https?|file):/.test(url)) { // Allow references within or below the same directory (should fix to allow other relative references or root reference; could make dependent on parse_url())
        href = this.window.location.href;
        pathPos = url.indexOf('/') === 0 ? href.indexOf('/', 8)-1 : href.lastIndexOf('/');
        url = href.slice(0, pathPos+1)+url;
    }
 
    if (context) {
        var http_options = context.stream_options && context.stream_options.http;
        var http_stream = !!http_options;
    }
 
    if (!context || http_stream) {
        var req = this.window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest();
        if (!req) {throw new Error('XMLHttpRequest not supported');}
 
        var method = http_stream ? http_options.method : 'GET';
        var async = !!(context && context.stream_params && context.stream_params['phpjs.async']);
        req.open(method, url, async);
        if (async) {
            var notification = context.stream_params.notification;
            if (typeof notification === 'function') {
                req.onreadystatechange = function (aEvt) { // aEvt has stopPropagation(), preventDefault(); see https://developer.mozilla.org/en/NsIDOMEvent
 
// Other XMLHttpRequest properties: multipart, responseXML, status, statusText, upload, withCredentials; overrideMimeType()
/*
PHP Constants:
STREAM_NOTIFY_RESOLVE   1     A remote address required for this stream has been resolved, or the resolution failed. See severity  for an indication of which happened.
STREAM_NOTIFY_CONNECT   2   A connection with an external resource has been established.
STREAM_NOTIFY_AUTH_REQUIRED 3   Additional authorization is required to access the specified resource. Typical issued with severity level of STREAM_NOTIFY_SEVERITY_ERR.
STREAM_NOTIFY_MIME_TYPE_IS  4   The mime-type of resource has been identified, refer to message for a description of the discovered type.
STREAM_NOTIFY_FILE_SIZE_IS  5   The size of the resource has been discovered.
STREAM_NOTIFY_REDIRECTED    6   The external resource has redirected the stream to an alternate location. Refer to message .
STREAM_NOTIFY_PROGRESS  7   Indicates current progress of the stream transfer in bytes_transferred and possibly bytes_max as well.
STREAM_NOTIFY_COMPLETED 8   There is no more data available on the stream.
STREAM_NOTIFY_FAILURE   9   A generic error occurred on the stream, consult message and message_code for details.
STREAM_NOTIFY_AUTH_RESULT   10   Authorization has been completed (with or without success).
 
STREAM_NOTIFY_SEVERITY_INFO 0   Normal, non-error related, notification.
STREAM_NOTIFY_SEVERITY_WARN 1   Non critical error condition. Processing may continue.
STREAM_NOTIFY_SEVERITY_ERR  2   A critical error occurred. Processing cannot continue.
*/
 
                    var objContext = {}; // properties are not available in PHP, but offered on notification via 'this' for convenience
                    objContext.responseText = req.responseText;
                    objContext.responseXML = req.responseXML;
                    objContext.status = req.status;
                    objContext.statusText = req.statusText;
                    objContext.readyState = req.readyState;
                    objContext.evt = aEvt;
 
                    // notification args: notification_code, severity, message, message_code, bytes_transferred, bytes_max (all int's except string 'message')
                    // Need to add message, etc.
                    var bytes_transferred;
                    switch(req.readyState) {
                        case 0: //   UNINITIALIZED   open() has not been called yet.
                            notification.call(objContext, 0, 0, '', 0, 0, 0);
                            break;
                        case 1: //   LOADING   send() has not been called yet.
                            notification.call(objContext, 0, 0, '', 0, 0, 0);
                            break;
                        case 2: //   LOADED   send() has been called, and headers and status are available.
                            notification.call(objContext, 0, 0, '', 0, 0, 0);
                            break;
                        case 3: //   INTERACTIVE   Downloading; responseText holds partial data.
                            bytes_transferred = Math.floor(req.responseText.length/2); // Two characters for each byte
                            notification.call(objContext, 7, 0, '', 0, bytes_transferred, 0);
                            break;
                        case 4: //   COMPLETED   The operation is complete.
                            if (req.status >= 200 && req.status < 400) {
                                bytes_transferred = Math.floor(req.responseText.length/2); // Two characters for each byte
                                notification.call(objContext, 8, 0, '', req.status, bytes_transferred, 0);
                            }
                            else if (req.status === 403) { // Fix: These two are finished except for message
                                notification.call(objContext, 10, 2, '', req.status, 0, 0);
                            }
                            else { // Errors
                                notification.call(objContext, 9, 2, '', req.status, 0, 0);
                            }
                            break;
                        default:
                            throw 'Unrecognized ready state for file_get_contents()';
                    }
                }
            }
        }
 
        if (http_stream) {
            var sendHeaders = http_options.header && http_options.header.split(/\r?\n/);
            var userAgentSent = false;
            for (i=0; i < sendHeaders.length; i++) {
                var sendHeader = sendHeaders[i];
                var breakPos = sendHeader.search(/:\s*/);
                var sendHeaderName = sendHeader.substring(0, breakPos);
                req.setRequestHeader(sendHeaderName, sendHeader.substring(breakPos+1));
                if (sendHeaderName === 'User-Agent') {
                    userAgentSent = true;
                }
            }
            if (!userAgentSent) {
                var user_agent = http_options.user_agent ||
                                                                    (this.php_js.ini.user_agent && this.php_js.ini.user_agent.local_value);
                if (user_agent) {
                    req.setRequestHeader('User-Agent', user_agent);
                }
            }
            content = http_options.content || null;
            /*
            // Presently unimplemented HTTP context options
            var request_fulluri = http_options.request_fulluri || false; // When set to TRUE, the entire URI will be used when constructing the request. (i.e. GET http://www.example.com/path/to/file.html HTTP/1.0). While this is a non-standard request format, some proxy servers require it.
            var max_redirects = http_options.max_redirects || 20; // The max number of redirects to follow. Value 1 or less means that no redirects are followed.
            var protocol_version = http_options.protocol_version || 1.0; // HTTP protocol version
            var timeout = http_options.timeout || (this.php_js.ini.default_socket_timeout && this.php_js.ini.default_socket_timeout.local_value); // Read timeout in seconds, specified by a float
            var ignore_errors = http_options.ignore_errors || false; // Fetch the content even on failure status codes.
            */
        }
        // We should probably change to an || "or", in order to have binary as the default (as it is in PHP), but this method might not be well-supported; check for its existence instead or will this be to much trouble?
        if (flagNames & OPTS.PHP_FILE_BINARY && !(flagNames & OPTS.PHP_FILE_TEXT)) { // These flags shouldn't be together
            req.sendAsBinary(content); // In Firefox, only available FF3+
        }
        else {
            req.send(content);
        }
 
        tmp = req.getAllResponseHeaders();
        if (tmp) {
            tmp = tmp.split('\n');
            for (k=0; k < tmp.length; k++) {
                if (func(tmp[k])) {
                    newTmp.push(tmp[k]);
                }
            }
            tmp = newTmp;
            for (i=0; i < tmp.length; i++) {
                headers[i] = tmp[i];
            }
            this.$http_response_header = headers; // see http://php.net/manual/en/reserved.variables.httpresponseheader.php
        }
 
        if (offset || maxLen) {
            if (maxLen) {
                return req.responseText.substr(offset || 0, maxLen);
            }
            return req.responseText.substr(offset);
        }
        return req.responseText;
    }
    return false;
}

Examples

Currently there is 1 example

Example 1

This is how you could call file_get_contents()
file_get_contents('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm');
And that would return
'123'

More about this Project

Download php.js

To easily include it in your code, every function currently available is stored in

Normal

Namespaced What is 'namespaced?'

To download use Right click, Save Link As
Generally the best way is to use a minified version and gzip it


Credits

Respect & awards go to everybody who has contributed in some way so far:

medalmedalBrett Zamir (link) for contributing to:
 array_diff, array_diff_assoc, array_diff_key, array_diff_uassoc, array_diff_ukey, array_fill_keys, array_fill_keys, array_filter, array_intersect, array_intersect_assoc, array_intersect_key, array_intersect_uassoc, array_intersect_ukey, array_keys, array_map, array_merge, array_merge_recursive, array_pop, array_search, array_slice, array_slice, array_splice, array_udiff, array_udiff_assoc, array_udiff_uassoc, array_uintersect, array_uintersect_assoc, array_uintersect_uassoc, array_unique, arsort, arsort, asort, asort, compact, current, each, end, extract, key, krsort, ksort, natcasesort, natcasesort, natsort, natsort, next, pos, prev, reset, rsort, rsort, shuffle, sort, sort, uasort, uasort, uksort, usort, classkit_import, classkit_method_add, classkit_method_copy, classkit_method_redefine, classkit_method_remove, classkit_method_rename, class_exists, get_class_methods, get_class_vars, get_declared_classes, get_object_vars, method_exists, property_exists, ctype_alnum, ctype_alpha, ctype_cntrl, ctype_digit, ctype_graph, ctype_lower, ctype_print, ctype_punct, ctype_space, ctype_upper, ctype_xdigit, date, date, date, date, date_default_timezone_get, date_default_timezone_set, date_parse, gettimeofday, gmdate, gmmktime, gmstrftime, idate, localtime, mktime, strftime, strtotime, timezone_abbreviations_list, timezone_identifiers_list, restore_exception_handler, set_exception_handler, fclose, feof, fgetc, fgetcsv, fgets, fgetss, filemtime, fopen, fpassthru, fread, fseek, ftell, pathinfo, pclose, popen, readfile, rewind, call_user_func, call_user_func_array, create_function, func_get_arg, func_get_args, func_num_args, get_defined_functions, get_defined_functions, register_shutdown_function, assert, assert_options, get_cfg_var, get_defined_constants, get_required_files, getenv, getlastmod, ini_alter, ini_get, ini_get_all, ini_restore, ini_set, php_ini_loaded_file, php_ini_scanned_files, phpversion, putenv, set_time_limit, include, include_once, require, require_once, atan2, expm1, fmod, log1p, rand, constant, define, defined, die, exit, exit, php_strip_whitespace, sleep, time_nanosleep, time_sleep_until, usleep, gopher_parsedir, setrawcookie, aggregate, aggregate_info, aggregate_methods, aggregate_methods_by_list, aggregate_methods_by_regexp, aggregate_properties, aggregate_properties_by_list, aggregate_properties_by_regexp, aggregation_info, deaggregate, preg_grep, sql_regcase, runkit_class_adopt, runkit_class_emancipate, runkit_function_add, runkit_function_copy, runkit_function_redefine, runkit_function_remove, runkit_function_rename, runkit_import, runkit_method_add, runkit_method_copy, runkit_method_redefine, runkit_method_remove, runkit_method_rename, runkit_superglobals, chunk_split, convert_uuencode, count_chars, echo, get_html_translation_table, lcfirst, levenshtein, localeconv, md5, md5_file, nl2br, nl_langinfo, parse_str, printf, quoted_printable_decode, quoted_printable_decode, quoted_printable_encode, setlocale, sha1, soundex, sprintf, str_getcsv, str_ireplace, str_replace, str_replace, str_shuffle, str_split, str_word_count, strcoll, strcspn, strip_tags, strlen, strnatcasecmp, strncmp, strrchr, strspn, strtok, strtr, substr_compare, substr_replace, ucfirst, vprintf, base64_decode, get_headers, get_meta_tags, parse_url, rawurldecode, rawurldecode, rawurlencode, rawurlencode, rawurlencode, urldecode, urldecode, urlencode, urlencode, doubleval, get_defined_vars, get_resource_type, gettype, import_request_variables, import_request_variables, is_array, is_array, is_binary, is_buffer, is_callable, is_real, is_resource, is_unicode, print_r, print_r, settype, strval, strval, unserialize, var_dump, var_export, utf8_decode
spacemedalOnno Marsman for contributing to:
 acos, acosh, asin, asinh, atan, atanh, ceil, cos, cosh, decbin, dechex, decoct, exp, floor, fmod, getrandmax, hypot, is_finite, is_infinite, is_nan, lcg_value, log, log10, max, max, min, min, mt_getrandmax, mt_rand, pi, pow, rand, round, sin, sinh, sqrt, tan, tanh, setcookie, preg_quote, addslashes, bin2hex, count_chars, html_entity_decode, htmlentities, htmlspecialchars_decode, levenshtein, ltrim, nl2br, nl2br, ord, parse_str, rtrim, soundex, str_ireplace, str_replace, str_replace, str_rot13, str_split, strcasecmp, strip_tags, stripos, stripslashes, stristr, strlen, strnatcmp, strncasecmp, strpbrk, strpos, strrev, strripos, strrpos, strstr, strtolower, strtoupper, substr, substr_count, trim, ucfirst, ucwords, base64_decode, empty, empty, is_array, is_bool, isset, utf8_decode, utf8_encode, utf8_encode
spacemedalMichael White (link) for contributing to:
 array_count_values, get_included_files, include, include_once, require, require_once, md5, number_format, parse_str, printf, sha1, sprintf, str_pad, strnatcmp, vprintf, http_build_query, floatval, is_object, print_r
spacemedalWaldo Malqui Silva for contributing to:
 array_fill, array_pad, array_product, array_rand, compact, count, range, abs, defined, ip2long, long2ip, implode, strcmp, strncmp, ucwords, settype
spacemedalPaulo Ricardo F. Santos for contributing to:
 getdate, microtime, constant, define, chop, chunk_split, quotemeta, sprintf, get_headers, gettype, is_double, is_float, is_integer, is_long, is_scalar
spacemedalJack for contributing to:
 compact, max, min, count_chars, htmlentities, md5, parse_str, soundex, sprintf, str_ireplace, strnatcmp, trim, utf8_encode
spacemedalJonas Raoni Soares Silva (link) for contributing to:
 shuffle, abs, setcookie, number_format, number_format, soundex, str_repeat, str_replace, str_rot13, ucwords, wordwrap, wordwrap
spacemedalPhilip Peterson for contributing to:
 sizeof, log10, round, exit, echo, get_html_translation_table, nl2br, str_replace, strchr, urldecode, urlencode, var_export
spacemedalAtes Goral (link) for contributing to:
 array_change_key_case, array_count_values, array_diff_key, each, get_class, preg_quote, addslashes, count_chars, str_rot13, stripslashes
spacemedalLegaev Andrey for contributing to:
 end, reset, file, file_get_contents, function_exists, include, include_once, http_build_query, is_array, is_object
spacemedalMartijn Wieringa for contributing to:
 array_shift, array_unshift, str_ireplace, str_split, strcasecmp, stripos, strnatcmp, substr
spacemedalNate for contributing to:
 array_merge, array_sum, array_unique, pathinfo, addslashes, echo, strncasecmp
spacemedalEnrique Gonzalez for contributing to:
 file_exists, filesize, decbin, decoct, deg2rad, rad2deg
spacemedalPhilippe Baumann for contributing to:
 base_convert, bindec, dechex, hexdec, octdec, empty
spacemedalTheriault for contributing to:
 array_multisort, quoted_printable_decode, quoted_printable_decode, quoted_printable_encode, quoted_printable_encode
spacemedalWebtoolkit.info (link) for contributing to:
 crc32, md5, sha1, utf8_decode, utf8_encode
 
spacemedalAsh Searle (link) for contributing to:
 basename, printf, sprintf, vprintf
spacemedalCarlos R. L. Rodrigues (link) for contributing to:
 array_chunk, array_unique, date, levenshtein
spacemedalJani Hartikainen for contributing to:
 file, file_exists, file_get_contents, filesize
spacemedalOle Vrijenhoek for contributing to:
 convert_uuencode, convert_uuencode, quoted_printable_decode, str_word_count
spacemedaltravc for contributing to:
 rawurldecode, rawurlencode, urldecode, urlencode
spacemedalAlex for contributing to:
 get_html_translation_table, strip_tags, is_int
spacemedalAndrea Giammarchi (link) for contributing to:
 array_map, define, levenshtein
spacemedalErkekjetter for contributing to:
 ltrim, rtrim, trim
spacemedalGeekFG (link) for contributing to:
 krsort, ksort, time
spacemedalJohnny Mast (link) for contributing to:
 array_walk, array_walk_recursive, create_function
spacemedalMichael Grier for contributing to:
 array_unique, wordwrap, rawurlencode
spacemedald3x for contributing to:
 array, explode, unserialize
spacemedalmarrtins for contributing to:
 array_change_key_case, addslashes, stripslashes
spacemedalstag019 for contributing to:
 parse_str, parse_str, http_build_query
spacemedalAJ for contributing to:
 urldecode, urlencode
spacemedalAlfonso Jimenez (link) for contributing to:
 array_reduce, strpbrk
spacemedalAman Gupta for contributing to:
 base64_decode, utf8_decode
spacemedalArpad Ray (mailto:arpad@php.net) for contributing to:
 serialize, unserialize
spacemedalBreaking Par Consulting Inc (link) for contributing to:
 gettimeofday, localtime
spacemedalCaio Ariede (link) for contributing to:
 strtotime, strtotime
spacemedalDavid for contributing to:
 strtotime, is_numeric
spacemedalJosh Fraser (link) for contributing to:
 gettimeofday, localtime
spacemedalKELAN for contributing to:
 get_html_translation_table, gettype
spacemedalKarol Kowalski for contributing to:
 array_reverse, abs
spacemedalLars Fischer for contributing to:
 urldecode, urlencode
spacemedalMarc Palau for contributing to:
 mktime, strip_tags
spacemedalMirek Slugen for contributing to:
 htmlspecialchars, htmlspecialchars_decode
spacemedalOleg Eremeev for contributing to:
 str_replace, str_replace
spacemedalPellentesque Malesuada for contributing to:
 base64_decode, base64_encode
spacemedalPublic Domain (link) for contributing to:
 json_decode, json_encode
spacemedalSakimori for contributing to:
 strlen, wordwrap
spacemedalSteve Hilder for contributing to:
 strcmp, strncmp
spacemedalSteven Levithan (link) for contributing to:
 trim, parse_url
spacemedalThunder.m for contributing to:
 base64_decode, base64_encode
spacemedalTyler Akins (link) for contributing to:
 base64_decode, base64_encode
spacemedalgettimeofday for contributing to:
 date, idate
spacemedalgorthaur for contributing to:
 strcmp, strncmp
spacemedalmdsjack (link) for contributing to:
 include, trim
spacemedal0m3r for contributing to:
 array_diff_assoc
spacemedalAlexander Ermolaev (link) for contributing to:
 trim
spacemedalAllan Jensen (link) for contributing to:
 number_format
spacemedalAndreas for contributing to:
 setcookie
spacemedalAndrej Pavlovic for contributing to:
 serialize
spacemedalAnton Ongson for contributing to:
 str_replace
spacemedalArno for contributing to:
 htmlspecialchars
spacemedalAtli Þór for contributing to:
 nl2br
spacemedalBayron Guevara for contributing to:
 base64_encode
spacemedalBen Bryan for contributing to:
 print_r
spacemedalBenjamin Lupton for contributing to:
 number_format
spacemedalBlues (link) for contributing to:
 strftime
spacemedalBlues at link for contributing to:
 setlocale
spacemedalBobby Drake for contributing to:
 strip_tags
spacemedalBrad Touesnard for contributing to:
 date
spacemedalBryan Elliott for contributing to:
 date
spacemedalCagri Ekin for contributing to:
 parse_str
spacemedalChaosNo1 for contributing to:
 timezone_abbreviations_list
spacemedalChristian Doebler for contributing to:
 sleep
spacemedalCord for contributing to:
 is_array
spacemedalDaniel Esteban for contributing to:
 strpos
spacemedalDavid James for contributing to:
 get_class
spacemedalDavid Randall for contributing to:
 date
spacemedalDer Simon (link) for contributing to:
 echo
spacemedalDino for contributing to:
 serialize
spacemedalDiogo Resende for contributing to:
 number_format
spacemedalDouglas Crockford (link) for contributing to:
 gettype
spacemedalDxGx for contributing to:
 trim
spacemedalEric Nagel for contributing to:
 strip_tags
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tags: programming, php, javascript
category: Programming - Javascript - PHP equivalents
read: 12,670 times

Add Comment

PHP.JS is outgroing this blog and moving to it's own space. Please leave your comment here: http://phpjs.org/functions/file_get_contents

Comments

#11. Kevin on 25 January 2009

Member avatar: Kevin@ Brett Zamir: Fair enough.. Added

#10. Brett Zamir on 19 January 2009

Gravatar.com: Brett ZamirHere's another dependent to file_get_contents()... I've tried to make it more useful for JavaScript by not eliminating newlines (since they could be used without semicolons). I'm guessing there could be aspects I've missed, especially if you're trying to be able to operate on PHP code.

// You could use this for testing based on the PHP example, but note comment above
str = "<?php\n"+
"// PHP comment here\n"+
"\n"+
"/*\n"+
" * Another PHP comment\n"+
" */\n"+
"\n"+
"echo php_strip_whitespace(__FILE__);\n"+
"// Newlines are considered whitespace, and are removed too:\n"+
"do_nothing();"+
"?>";
 
// Depends on file_get_contents()
function php_strip_whitespace (file) {
try {
var str = file_get_contents(file);
}
catch (e) {
return '';
}
// Strip comments (both styles), reduce non-newline whitespace to one, reduce multiple newlines (preceded by any whitespace) to a newline, remove WS at beginning of line, and at end of line
return str.replace(/\/\/.*?\n/g, '').replace(/\/\*[^]*?\*\//g, '').replace(/[ \f\r\t\v\u00A0\u2028\u2029]+/g, ' ').replace(/\s*\n+/g, '\n').replace(/^\s+/gm, '').replace(/\s*$/gm, '');
}
 
alert(php_strip_whitespace('http://kevin.vanzonneveld.net/code/php_equivalents/php.namespaced.js'))

#9. Kevin on 14 January 2009

Member avatar: Kevin@ Brett Zamir & Onno Marsman: Sorry Onno... Added :)

#8. Brett Zamir on 13 January 2009

Gravatar.com: Brett ZamirHere's a function that depends on file_get_contents(). Note that I did not implement its second argument (for an include path), since local files aren't supported anyways. This is a fun one to play around with actually.

function get_meta_tags (file) {
var fulltxt = file_get_contents(file).match(/^[^]*<\/head>/i);
/* Kevin, you could use this for testing instead of the line above:
... [more] var fulltxt = '<meta name="author" content="name">'+
'<meta name="keywords" content="php documentation">'+
'<meta name="DESCRIPTION" content="a php manual">'+
'<meta name="geo.position" content="49.33;-86.59">'+
'</head>';*/
var patt = /<meta[^>]*?>/gim;
var txt, match, name, arr={};
while ((txt = patt.exec(fulltxt)) != null) {
var patt1 = /<meta\s+.*?name\s*=\s*(['"]?)(.*?)\1\s+.*?content\s*=\s*(['"]?)(.*?)\3/gim;
while ((match = patt1.exec(txt)) != null) {
name = match[2].replace(/\W/g, '_').toLowerCase();
arr[name] = match[4];
}
var patt2 = /<meta\s+.*?content\s*=\s*(['"?])(.*?)\1\s+.*?name\s*=\s*(['"]?)(.*?)\3/gim;
while ((match = patt2.exec(txt)) != null) {
name = match[4].replace(/\W/g, '_').toLowerCase();
arr[name] = match[2];
}
}
return arr;
}

#7. Kevin on 13 November 2008

Member avatar: KevinEnrique González: Cool Enrique! Thanks a LOT!

#6. Enrique González on 10 November 2008

Gravatar.com: Enrique GonzálezWith JS it is not posible to retrieve a local file using file() or file_get_contents(), so it may be useful to use this same method using HEAD instead of GET to have the equivalent to filesize or file_exists

function filesize( url ) {  
var req = null;
try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {
try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {
try { req = new XMLHttpRequest(); } catch(e) {}
}
}
if (req == null) throw new Error('XMLHttpRequest not supported');
req.open ('HEAD',url,false);
req.send (null);
return req.getResponseHeader('Content-Length');
}


function file_exists( url ) {  
var req = null;
try { req = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {
try { req = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {
try { req = new XMLHttpRequest(); } catch(e) {}
}
}
if (req == null) throw new Error('XMLHttpRequest not supported');
// HEAD Results are usually shorter (faster) than GET
req.open ('HEAD',url,false);
req.send (null);
if (req.status ==200){ return true;}
else {return false;}
}


I'm not quite sure if this functions fit correctly in php.js. Both functions won't work with http files in php, but as I said before, php works with local files and js does not, so working with remote http files may be somehow equivalent.

Also the file_exists function may have different answers. Status code 200 means something exists, 404 it doesn't, but there are lot's of codes that mean different things.

#5. Kevin on 02 October 2008

Member avatar: Kevin@ Adnan Siddiqi: That is correct. Browser will prevent that because it's considered a security risk.

@ Philippe Baumann: Good to see you back! Don't forget to checkout work in progress at: http://phpjs.org That site will have much better submit features! Added your functions btw, thanks!

#4. Philippe Baumann on 02 October 2008

Gravatar.com: Philippe BaumannJust found this project again and wanted to see how it's going. I'm very impressed how much this library has grown since.

I've found the following two functions in my development folder. Admittedly, they're not used very often and I also didn't really come up with the first one myself, but you might still find them a nice addition:

/*
string dechex ( int $number )
 
Returns a string containing a hexadecimal representation of the given number argument.
The largest number that can be converted is 4294967295 in decimal resulting to "ffffffff".
*/

function dechex(number)
{
return number.toString(16);
}
 
 
/*
number hexdec ( string $hex_string )
 
Returns the decimal equivalent of the hexadecimal number represented by the hex_string argument.
hexdec() converts a hexadecimal string to a decimal number.
 
hexdec() will ignore any non-hexadecimal characters it encounters.
*/

function hexdec(hex_string)
{
hex_string = (hex_string+'').replace(/[^a-f0-9]/gi, '');
return parseInt(hex_string, 16);
}


By the way: Is there a better way to chat and submit functions than posting in the article for another function?

#3. Adnan Siddiqi on 02 October 2008

Gravatar.com: Adnan SiddiqiIt won't work for cross domain calls

#2. Kevin on 18 July 2008

Member avatar: KevinGlad you found this helpful. I you want you can always help me spread the word on this project :)

#1. Kyle Itterly on 03 July 2008

Default avatar:Kyle ItterlyJust wanted to thank you for the javascript file_get_contents function, works great and was well documented. Unfortunately this reference was elusive on my google search of "read file javascript" and a lot of others were looking for something like this too based on that query.