#20. Kevin on 22 April 2008

@ Philip Peterson: If it's even possible to set the timezone for an entire page... I think you can only do this to a date object. So maybe the right approach is to include a

+(date.getTimeZoneOffset() * 60 * 60);

In the test to neutralize the end user's timezone?

#19. Kevin on 22 April 2008

@ Philip Peterson: Hi Philip. Running the tests in a predefined timezone seems to be a good solution. We should opt for UTC I think. Then adjust the 'result' comment to match the UTC outcome of mktime. Much better indeed!

#18. Philip Peterson on 21 April 2008

Hmm, yeah, I figured that might be it, but does PHP do that? If not it might be a good idea to set the timezone to UTC/GMT/Something as a standard, or maybe including a config file to choose whether to leave it up to the user's computer or to set a standard?

#17. Kevin on 20 April 2008

@ Philip Peterson: Yeah that's related to the different timezones that we are in.

#16. Philip Peterson on 20 April 2008

Just so you know... this is six hours off in firefox, I think? :-/ In the php_tester example, at least... I'm not sure what's doing it, though...

#15. Kevin on 19 April 2008

@ FGFEmperor: Thanks a lot!

#14. FGFEmperor on 18 April 2008

OK, now setting a month to something greater than 11 would not increase the year... My correction (also for hours, minutes and seconds...

var no, ma = 0, mb = 0, i = 0, d = new Date(), argv = arguments, argc = argv.length;
    d.setHours(0,0,0); d.setDate(1); d.setMonth(1); d.setYear(1972);
 
    var dateManip = {
        0: function(tt){ return d.setHours(tt); },
        1: function(tt){ return d.setMinutes(tt); },
        2: function(tt){ set = d.setSeconds(tt); mb = d.getDate() - 1; return set; },
        3: function(tt){ set = d.setMonth(parseInt(tt)-1); ma = d.getFullYear() - 1972; return set; },
        4: function(tt){ return d.setDate(tt+mb); },
        5: function(tt){ return d.setYear(tt+ma); }
    };

Basically I added 'ma' and 'mb' to the vars, and summed that on Years and Days... =)

#13. Kevin on 02 April 2008

@ FGFEmperor: Good work man, thanks a lot, I'll update the function!

#12. FGFEmperor on 31 March 2008

OK, another update:
change
d.setYear(1970);
to
d.setYear(1972);
... [more] Why? Because this way Leap Years are gonna work.

#11. FGFEmperor on 31 March 2008

Got It! Add

d.setHours(0,0,0); d.setDate(1); d.setMonth(1); d.setYear(1970);

after

var no, i = 0, d = new Date(), argv = arguments, argc = argv.length;

The catch here is that d = New Date(); sets d to the current date. What was happening is that today is the 31th, and I the function was setting the month to February, but the day was still the 31th, then it would set the month to March (since February has only 28/29 days). ;-)

#10. FGFEmperor on 31 March 2008

I have no idea why, but this:
alert('PHP: <?= mktime(0,0,0,4,5,2009); ?>\nJS: '+mktime(0,0,0,4,5,2009));
returns this:
PHP: 1238900400
JS: 1241550694
... [more] Any idea why? That way, I should get 4/5/2009 for both, but I'm getting 5/5/2009 on the JS version...

#9. Kevin on 23 March 2008

@ gabriel paderni: The example won't reproduce:
http://kevin.vanzonneveld.net/test.php

But I've added the parseInt function. Does that solve the bug? Thanks gabriel!

#8. gabriel paderni on 22 March 2008

If i'm not mistaken there's a bug when using strings as parameters: here is the test I've made:

<script type="text/javascript">
function mktimetest(t_php,t_js){
  document.write(t_php+'
'+t_js);
  if(t_php!=t_js)document.write(' &lt;- Error');
  document.write('
 
');
}
mktimetest(<?php echo mktime('01','30','10','06','21','2008')?>,mktime('01','30','10','06','21','2008'));
mktimetest(<?php echo mktime('01','30','10','07','21','2008')?>,mktime('01','30','10','07','21','2008'));
mktimetest(<?php echo mktime('01','30','10','08','21','2008')?>,mktime('01','30','10','08','21','2008'));
mktimetest(<?php echo mktime('01','30','10','09','21','2008')?>,mktime('01','30','10','09','21','2008'));
mktimetest(<?php echo mktime('01','30','10','10','21','2008')?>,mktime('01','30','10','10','21','2008'));
mktimetest(<?php echo mktime('01','30','10','11','21','2008')?>,mktime('01','30','10','11','21','2008'));
</script>

Strangely in the test this shows up only for August and September. The solution may be to remove the leading zero when the parameter is a string. (Tested with: Firefox and Internet explorer, same result.)

#7. Kevin on 02 March 2008

@ Michael White: Tried to reproduce the behavior, but wasn't able to:
http://kevin.vanzonneveld.net/test.php

#6. Michael White on 02 March 2008

The example appears to be incorrect for this function. I checked in a PHP script to verify this and to get the correct value. The new example:

// *     example 1: mktime( 14, 10, 2, 2, 1, 2008 );
    // *     returns 1: 1201893002

#5. Kevin on 21 February 2008

@ baris ozdil: Thank your for your contribution, I've updated php.js and included you in the credits!

#4. baris ozdil on 21 February 2008

Hi Kevin, Thanks a lot for this nice library. Just a small correction in mktime. In javascript the setMonth the month values are 0 based indexed. I think it should be something like this:

var dateManip = {
        0: function(tt){ return d.setHours(tt); },
        1: function(tt){ return d.setMinutes(tt); },
        2: function(tt){ return d.setSeconds(tt); },
        3: function(tt){ return d.setMonth(parseInt(tt)-1); },
        4: function(tt){ return d.setDate(tt); },
        5: function(tt){ return d.setYear(tt); }
    };

#3. Kevin on 03 February 2008

@ _argos: One thing: array_rand produces javascript errors when you feed it an object instead of an array. maybe we should implement some sort of sanity checking there.

Other than that: Nice work again man, you've earned yourself 2 gold medals :)

#2. _argos on 03 February 2008

Kevin, a litle fix in array_product

function array_product ( input ) {
var Index = 0, Product = 1;

... [more] if ( input instanceof Array ) {
while ( Index < input.length ) {
Product *= ( !isNaN ( input [ Index ] ) ? input [ Index ] : 0 );
Index++;
}
} else {
Product = null;
}

return Product;
}

#1. _argos on 03 February 2008

Hi Kevin, I'm attaching 3 functions more for the PHP.js project.

function array_product ( input ) {
  var Index = 0, Product = 1;
  
  if ( input instanceof Array ) {
    while ( Index < input.length  ) {
      Product *= ( !isNaN ( input [ Index ] ) ? input [ Index ] : 0 );
      Index++;
    }
  } else {
    product = null;
  }
      
  return product;
}
 
function array_rand ( input, num_req ) {
  var Indexes = [];
  var Ticks = num_req || 1;
  var Check = {
    Duplicate  : function ( input, value ) {
      var Exist = false, Index = 0;
      while ( Index < input.length ) {
        if ( input [ Index ] === value ) {
          Exist = true;
          break;
        }
        Index++;
      }      
      return Exist;
    }
  };
  
  if ( input instanceof Array && Ticks <= input.length ) {
    while ( true ) {
      var Rand = Math.floor ( ( Math.random ( ) * input.length ) );
      if ( Indexes.length === Ticks ) { break; }
      if ( !Check.Duplicate ( Indexes, Rand ) ) { Indexes.push ( Rand ); }
    }
  } else {
    Indexes = null;
  }
  
  return ( ( Ticks == 1 ) ? Indexes.join ( ) : Indexes );
}
 
function compact ( var_names ) {
  var Index = 0, Matrix = {};
  var Process = function ( value ) {
    for ( var i = 0; i < value.length; i++ ) {
      var key_value = value [ i ];      
      if ( key_value instanceof Array ) {
        Process ( key_value );
      } else {
        if ( typeof window [ key_value ] !== 'undefined' ) {
          Matrix [ key_value ] = window [ key_value ];
        }
      }
    }
    return true;
  };
  
  Process ( arguments );
 
  return Matrix;
}