[英]Get specific value from PHP array using foreach key value
我有以下數組:
array(15) {
[0]=> object(stdClass)#317 (2) { ["id"]=> string(1) "2" ["value"]=> string(1) "1" }
[1]=> object(stdClass)#316 (2) { ["id"]=> string(1) "3" ["value"]=> string(531) "awfaww" }
[2]=> object(stdClass)#315 (2) { ["id"]=> string(1) "4" ["value"]=> string(1) "1" }
[3]=> object(stdClass)#318 (2) { ["id"]=> string(1) "5" ["value"]=> string(1) "1" }
[4]=> object(stdClass)#319 (2) { ["id"]=> string(1) "6" ["value"]=> string(1) "1" }
[5]=> object(stdClass)#320 (2) { ["id"]=> string(1) "7" ["value"]=> string(1) "1" }
[6]=> object(stdClass)#321 (2) { ["id"]=> string(1) "8" ["value"]=> string(1) "1" }
[7]=> object(stdClass)#322 (2) { ["id"]=> string(2) "30" ["value"]=> string(8) "12:30:02" }
[8]=> object(stdClass)#323 (2) { ["id"]=> string(2) "31" ["value"]=> string(8) "18:12:00" }
[9]=> object(stdClass)#324 (2) { ["id"]=> string(2) "11" ["value"]=> string(10) "2014-06-17" }
[10]=> object(stdClass)#325 (2) { ["id"]=> string(2) "12" ["value"]=> string(10) "2014-06-26" }
[11]=> object(stdClass)#326 (2) { ["id"]=> string(2) "14" ["value"]=> string(1) "2" }
[12]=> object(stdClass)#327 (2) { ["id"]=> string(2) "15" ["value"]=> string(1) "2" }
[13]=> object(stdClass)#328 (2) { ["id"]=> string(2) "16" ["value"]=> string(1) "4" }
[14]=> object(stdClass)#329 (2) { ["id"]=> string(2) "17" ["value"]=> string(1) "5" }
}
我想使用ID從此數組中獲取特定值。 例如,如果在數組中找到ID:11,則要檢索其值。 我怎樣才能做到這一點?
嘗試這樣的事情:
<?php
function findById($array, $id) {
foreach ($array as $value) {
if ($value->id == $id) {
return $value->value;
}
}
return null;
}
$result = findById($yourArray, 11);
?>
如果數組在每次運行時都是靜態的-我建議使用以下方法將數組更改為“ key” =>“ value”數組:
$new_arr = array();
foreach($original_array as $object) {
$new_arr[$object->id] = $object->value;
}
然后您可以只使用$new_arr[id]
,而不是每次都搜索整個原始數組。
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