41 lines
1.2 KiB
PHP
41 lines
1.2 KiB
PHP
<?
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/**
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** array.php
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**
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** This contains functions that work with array manipulation. They
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** will help sort, and do other types of things with arrays
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**
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**/
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function ary_sort($ary,$col, $dir = 1){
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// The globals are used because USORT determines what is passed to comp2
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// These should be $this->col and $this->dir in a class
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// Would beat using globals
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if(!is_array($col)){
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$col = array("$col");
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}
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$GLOBALS["col"] = $col; // Column or Columns as an array
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$GLOBALS["dir"] = $dir; // Direction, a positive number for ascending a negative for descending
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function comp2($a,$b,$i = 0) {
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global $col;
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global $dir;
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$c = count($col) -1;
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if ($a["$col[$i]"] == $b["$col[$i]"]){
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$r = 0;
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while($i < $c && $r == 0){
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$i++;
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$r = comp2($a,$b,$i);
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}
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} elseif($a["$col[$i]"] < $b["$col[$i]"]){
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$r = -1 * $dir; // Im not sure why you must * dir here, but it wont work just before the return...
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} else {
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$r = 1 * $dir;
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}
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return $r;
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}
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usort($ary,comp2);
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return $ary;
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}
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?>
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