逆序数组插入元素PHP实现

PHP代码如下:

<?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);