假设我们有数组:
$array1 = array (
'key1' => 1,
'non1' => 1,
'key2' => 1,
'non2' => 1,
'non3' => 1,
'non4' => 1,
'key3' => 1,
'key4' => 1
);
如何移动所有具有key name
LIKE "key"
的键并将它们移动到另一个数组
$array2 = movekey('key',$array1);
将:
array1 = array (
'non1' => 1,
'non2' => 1,
'non3' => 1,
'non4' => 1
);
array2 = array (
'key1' => 1,
'key2' => 1,
'key3' => 1,
'key4' => 1
);
$array2 = array();
foreach($array1 as $key => $val) {
if(strpos($key,'key')!==false){
$array2[$key] = $val; //Copy all the values that have key-name like 'key'.
unset($array1[$key]); //Removes the copied key and value.
}
}
只是因为它看起来很有趣,所以按照OP最初的愿望把它写成函数形式:
function moveKey($cmp, Array & $ar)
{
$y = array();
foreach($ar as $key => $value) {
if(strpos($key, $cmp) !== false) {
$y[$key] = $value;
unset($ar[$key]);
}
}
return $y;
}
,然后测试函数:
$array1 = array (
'key1' => 1,
'non1' => 1,
'key2' => 1,
'non2' => 1,
'non3' => 1,
'non4' => 1,
'key3' => 1,
'key4' => 1
);
$a2 = moveKey('key', $array1);
echo "<pre>". print_r($array1, true) ."'n". print_r($a2, true) ."</pre>";
输出:
Array
(
[non1] => 1
[non2] => 1
[non3] => 1
[non4] => 1
)
Array
(
[key1] => 1
[key2] => 1
[key3] => 1
[key4] => 1
)
玩得开心!
$result = array();
foreach ($array as $key => $value) {
if (strpos($key, 'key') !== false) {
$result[$key] = $value;
}
}
foreach (array_keys($array1) as $key) {
if (!preg_match('/^key'd+/', $key)) {
unset($array1[$key]);
}
}
print_r ($array1);