(PHP 4 >= 4.0.5, PHP 5, PHP 7)
array_search — 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷晒锟斤拷蚍祷锟斤拷赘锟斤拷锟接︼拷募锟斤拷锟�
锟斤拷锟斤拷锟诫，锟节大海ｏ拷haystack锟斤拷锟斤拷锟斤拷锟斤拷锟诫（
needle 锟斤拷锟斤拷锟斤拷锟斤拷
needle锟斤拷锟斤拷锟斤拷值锟斤拷
Note:
锟斤拷锟�
needle锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷冉锟斤拷锟斤拷锟斤拷执锟叫⌒达拷姆锟绞斤拷锟斤拷小锟�
haystack锟斤拷锟斤拷锟斤拷椤�
strict
锟斤拷锟斤拷锟窖★拷牡锟斤拷锟斤拷锟斤拷锟斤拷锟� strict 为 TRUE锟斤拷锟斤拷
array_search() 锟斤拷锟斤拷 haystack
锟叫硷拷锟�锟斤拷全锟斤拷同锟斤拷元锟截★拷
锟斤拷锟斤拷味锟斤拷同锟斤拷锟较革拷冉锟� haystack 锟斤拷 needle 锟斤拷 锟斤拷锟斤拷锟斤拷锟斤拷锟揭讹拷锟斤拷锟斤拷锟斤拷同一锟斤拷实锟斤拷锟斤拷
锟斤拷锟斤拷业锟斤拷锟� needle 锟津返伙拷锟斤拷锟侥硷拷锟斤拷锟斤拷锟津返伙拷 FALSE锟斤拷
锟斤拷锟� needle 锟斤拷
haystack
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array_keys() 锟斤拷锟较匡拷选锟斤拷锟斤拷
search_value 锟斤拷锟斤拷锟芥。
锟剿猴拷锟斤拷锟斤拷锟杰凤拷锟截诧拷锟斤拷值
FALSE锟斤拷锟斤拷也锟斤拷锟杰凤拷锟截碉拷同锟斤拷 FALSE 锟侥非诧拷锟斤拷值锟斤拷锟斤拷锟侥讹拷 锟斤拷锟斤拷锟斤拷锟斤拷锟铰斤拷锟皆伙拷取锟斤拷锟斤拷锟斤拷息锟斤拷应使锟斤拷
===
锟斤拷锟斤拷锟�锟斤拷锟斤拷锟皆此猴拷锟斤拷锟侥凤拷锟斤拷值锟斤拷
| 锟芥本 | 说锟斤拷 |
|---|---|
| 5.3.0 |
As with all internal PHP functions as of 5.3.0,
array_search() returns NULL if invalid parameters
are passed to it.
|
Example #1 array_search() 锟斤拷锟斤拷
<?php
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');
$key = array_search('green', $array); // $key = 2;
$key = array_search('red', $array); // $key = 1;
?>