PHP实现的自定义数组排序函数与排序类示例

1,'b'=>'c'),array('a'=>4,'b'=>'a'),array('a'=>5,'b'=>'g'),array('a'=>7,'b'=>'f'),array('a'=>6,'b'=>'e') ); function compare_arr($x,$y){ if($x['b']<$y['b']){ return -1; }else if($x['b']>$y['b']){ return 1; }else{ return 0; } } uasort($arr,'compare_arr'); foreach($arr as $a){ echo $a['a'].'=>'.$a['b'].'
'; }

key = $key_to_sort; if ($type_of_sort == 'desc') uasort($myarray,array($this,'myreverse_compare')); else uasort($myarray,'mycompare')); return $myarray; } //正序 function mycompare($x,$y) { if ( $x[$this->key] == $y[$this->key] ) return 0; else if ( $x[$this->key] < $y[$this->key] ) return -1; else return 1; } //逆序 function myreverse_compare($x,$y) { if ( $x[$this->key] == $y[$this->key] ) return 0; else if ( $x[$this->key] > $y[$this->key] ) return -1; else return 1; } }