逆序二维数组插入一元素的php代码

<?php 
/** 
* 逆序二维数组插入一元素 
* 
* @author WadeYu 
* @date 2012-05-30 
*/ 
$aSorted = array( 
array(1, 100), 
array(2, 90), 
array(3, 80), 
array(4, 70), 
array(5, 60), 
array(6, 50), 
array(7, 40), 
array(8, 40), 
array(9, 40), 
array(10, 20), 
); 
$aInsert = array(11, 40); 
$maxCmpIdx = 0; 
$cnt = 0; 
$maxCnt = 10; 
foreach ($aSorted as $idx => $arr){ 
if ($arr[0] == $aInsert[0]){ 
$maxCmpIdx = $idx; 
} 
$cnt++; 
} 
if ( !$maxCmpIdx){ 
$maxCmpIdx = $cnt++; 
} 
$aSorted[$maxCmpIdx] = $aInsert; 
for ($i = $maxCmpIdx; $i > 0; $i--){ 
if ($aSorted[$i][1] > $aSorted[$i-1][1]){ 
$aTmp = $aSorted[$i-1]; 
$aSorted[$i-1] = $aSorted[$i]; 
$aSorted[$i] = $aTmp; 
continue ; 
} 
break; 
} 
for ($i = $cnt; $i > $maxCnt; $i--){ 
unset($aSorted[$i-1]); 
} 
print_r($aSorted);