phpjs/_octopress/source/functions/array_reverse/_comments.html

php.js offers community built php functions in javascript

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<strong>
Jan Bouvrie
</strong>
on 2012-08-08 17:15:20 <br />
Is it me, or is the type change from string '4.0' to numeric 4 in the example a side effect?
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<strong>
Rafa?
</strong>
on 2011-09-20 08:42:35 <br />
@Paul: I changed the function, so it returns Array when preserve_keys is falsy.
https://github.com/kvz/phpjs/blob/master/functions/array/array_reverse.js
I think it was the first and last time I've touched array functions.
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<strong>
<a href="http://PaulANorman.info" rel="nofollow">Paul</a>
</strong>
on 2011-09-20 02:30:55 <br />
When you pass a flat array (no direct keys) of just strings, and even set <pre><code> preserve_keys </code></pre> to false, you of course keep getting an object returned, and not an array as  <pre><code>  tmp_arr = {} </code></pre> and not <pre><code> tmp_arr = [] </code></pre>

So in the case of there being no supplied keys in the array this does not seem to work.

<pre><code>

  a = [&quot;a&quot;, &quot;b&quot;, &quot;c&quot;];
 
  b = PhpJs.array_reverse(a);

</code></pre>

 display b and you get [object Object] under QtScript at least.

Change to <pre><code> tmp_arr = [] </code></pre> 

... and you get the expected c, b, a

Does the function need to test on preserve_keys  first as to what <pre><code> temp_arr </code></pre> is created as?
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<strong>
<a href="..." rel="nofollow">makanaki</a>
</strong>
on 2011-02-09 17:57:12 <br />
At least when there's no flag &quot; preserve_keys&quot; this function should return array, not object. 
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<strong>
<a href="http://kevin.vanzonneveld.net" rel="nofollow">Kevin van Zonneveld</a>
</strong>
on 2008-11-18 12:24:46 <br />
@ frame: Yeah php.js is by no means ready. New functions are written and bugs are being fixed. It's a good idea to update your version every once in a while.
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<strong>
frame
</strong>
on 2008-11-18 01:38:31 <br />
hmm .. i have downloaded the lib again and now there are the missing functions included.. please ignore..
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<strong>
frame
</strong>
on 2008-11-18 01:25:46 <br />
Some functions are not included in php.js or php.min.js.. why?

do you forget to?

ex: file_exists, array_reserve
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<strong>
Also...
</strong>
on 2008-03-21 04:10:17 <br />
Also from the site I just mentioned, here's a function which returns a genuine array (this could probably be combined with your function to test for preserve_keys and if not present, return a genuine array?):
<pre><code>function array_reverse(arr) {
	/* Simulate copy by value */
	var arr_rev = [];
	for (var i = 0; i &amp;lt; arr.length; i++) {
		arr_rev[i] = arr[i];
	}
	arr_rev.reverse();
	return arr_rev;
}</code></pre>
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<strong>
Brett Zamir
</strong>
on 2008-03-21 03:53:29 <br />
Seems you've already done a whole lot of work, but not knowing about your site, I had started a wiki to keep this kind of information: http://javascript.wikia.com/wiki/PHP-Javascript . There are a few functions there presently, but please feel free to consider hosting this at such a wiki so it can be easily maintained by the whole community! Thanks! Email me at brettz9 &amp;amp; yahoo if you like.
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<strong>
<a href="http://kevin.vanzonneveld.net" rel="nofollow">Kevin van Zonneveld</a>
</strong>
on 2008-02-16 13:48:31 <br />
@ Karol Kowalski: That's solid work you can take pride in Karol, thank you!
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<strong>
Karol Kowalski
</strong>
on 2008-02-12 13:40:35 <br />
Hello,
I've done some code refactoring, making the code do what it really needs to do (there's no need for the 2nd loop, it there?). I've run a test and it seems to be 38% faster. Here's the code
<pre><code>
function array_reverse( array, preserve_keys ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: array_reverse( [ 'php', '4.0', ['green', 'red'] ], true );
    // *     returns 1: { 2: ['green', 'red'], 1: 4, 0: 'php'}
 
    var i=0, f, key, keys = [], key_cnt=0, tmp_ar = {};
 
    for(key in array){
        keys[i++] = key;
    }
    keys = keys.reverse();
    key_cnt = keys.length;
    for( i=0; i &amp;lt; key_cnt; i++ ){
        tmp_ar[(preserve_keys ? keys[i] : i)] = array[keys[i]];
    }
 
    return tmp_ar;
}

function array_reverse2( array, preserve_keys ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: array_reverse( [ 'php', '4.0', ['green', 'red'] ], true );
    // *     returns 1: { 2: ['green', 'red'], 1: 4, 0: 'php'}
 
	var arr_len=array.length, newkey=0, tmp_ar = {}
	 
    for(var key in array){
		newkey=arr_len-key-1;
        tmp_ar[(!!preserve_keys)?newkey:key]=array[newkey]
    }
	
    
    return tmp_ar;
}

// wrapped in windows onload cause
// Firebug 1.1 throws an error otherwise

window.onload=function () {

console.time('array_reverse')

for (var i=10000;i;i--) {

array_reverse( [ 'php', '4.0', ['green', 'red'] ], true );

}

console.timeEnd('array_reverse')


console.time('array_reverse2')

for (var i=10000;i;i--) {

array_reverse2( [ 'php', '4.0', ['green', 'red'] ], true );

}

console.timeEnd('array_reverse2')

}
</code></pre>
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