重新排列数组,按page_x后面数字排<?
$arr=array(
"page_1",
"page_12",
"page_11",
"page_22",
"page_2",
"page_5",
"page_3"
);
//怎样将$arr 按后面的数字由小到大重新排列?
//用sort出来的结果是 1 ,10,11,2,21,不符合要求
?>
$arr=array(
"page_1",
"page_12",
"page_11",
"page_22",
"page_2",
"page_5",
"page_3"
);
//怎样将$arr 按后面的数字由小到大重新排列?
//用sort出来的结果是 1 ,10,11,2,21,不符合要求
?>
<?php
$arr=array(
"page_1",
"page_12",
"page_11",
"page_22",
"page_2",
"page_5",
"page_3"
);//sort($arr);usort($arr,"my_sort");
print_r($arr);function my_sort($str1,$str2){
//echo "<br>";
$num1 = substr($str1,5);
//echo "---";
$num2 = substr($str2,5); if($num1 == $num2){
return 0;
}
return ($num1 > $num2 )?'1':'-1';
}
natsort($arr);//自然排序
print_r($arr);
Array
(
[0] => page_1
[4] => page_2
[6] => page_3
[5] => page_5
[2] => page_11
[1] => page_12
[3] => page_22
)index不是1,2,3.
怎么办
<?php
$a=array(3=>"Horse",4=>"Dog");
print_r(array_merge($a));
?>输出:Array ( [0] => Horse [1] => Dog )