输入 :
Array
(
[1] => Array
(
[id] => 11
[has_point] => 0
[xpr] => 0
[war] => 0
[sty] => 0
)
[2] => Array
(
[id] => 52
[has_point] => 0
[xpr] => 0
[war] => 0
[sty] => 0
)
[3] => Array
(
[id] => 34
[has_point] => 1
[xpr] => 300
[war] => 0
[sty] => 0
)
[4] => Array
(
[id] => 47
[has_point] => 0
[xpr] => 0
[war] => 0
[sty] => 0
)
[5] => Array
(
[id] => 57
[has_point] => 1
[xpr] => 500
[war] => 0
[sty] => 0
)
)
输出:
Array
(
[1] => 11
[2] => 52
[3] => 34
[4] => 47
[5] => 57
)
那么 PHP 中是否有任何函数来获取此输出,所以我不必编写自己的输出。
我试过了
function customArraySearch($array, $search) {
$col = array();
foreach ($array as $v) {
$col[] = $v[$search];
}
return $col;
}
我正在获得输出,但我想优化我的代码,所以如果数组中有 10000 条记录,则需要一些时间。请推荐任何内置的 php 函数
您需要
的函数是array_column。
$id_array = array_column($your_array, 'id');
注意:支持的版本为 PHP 5>= 5.5.0
试试这个...
$aa = array(
array(11, 0,0,0,0),
array(52, 0,0,0,0),
array(34, 0,0,0,0),
array(47, 0,0,0,0),
array(57, 0,0,0,0)
);
$newarray=array();
foreach( $aa as $k => list($a, $b,$c,$d,$e)) {
$newarray[]=$a;
}
print_r($newarray);
支持的版本是 (PHP 5>= 5.5.0)