锟斤拷锟斤拷 haystack 锟街凤拷锟斤拷锟斤拷 needle 锟斤拷一锟轿筹拷锟街碉拷位锟矫匡拷始锟斤拷锟斤拷尾锟斤拷锟街凤拷锟斤拷锟斤拷
haystack锟节革拷锟街凤拷锟斤拷锟叫诧拷锟揭★拷
needle
锟斤拷锟� needle 锟斤拷锟斤拷一锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷么锟斤拷锟斤拷锟斤拷转锟斤拷为锟斤拷锟酵诧拷锟斤拷锟斤拷为锟街凤拷顺锟斤拷值锟斤拷
before_needle
锟斤拷为 TRUE锟斤拷strstr() 锟斤拷锟斤拷锟斤拷 needle 锟斤拷 haystack 锟叫碉拷位锟斤拷之前锟侥诧拷锟斤拷(锟斤拷锟斤拷锟斤拷 needle)锟斤拷
锟斤拷锟斤拷 needle 锟斤拷 haystack 锟斤拷锟皆诧拷锟斤拷锟街达拷小写锟侥凤拷式锟皆达拷锟斤拷
锟斤拷锟斤拷匹锟斤拷锟斤拷锟斤拷址锟斤拷锟斤拷锟斤拷锟斤拷 needle 未锟揭碉拷锟斤拷锟斤拷锟斤拷 FALSE锟斤拷
| 锟芥本 | 说锟斤拷 |
|---|---|
| 5.3.0 |
锟斤拷锟斤拷锟斤拷选锟斤拷 before_needle 锟斤拷锟斤拷锟斤拷
|
| 4.3.0 | stristr() 锟斤拷为锟斤拷锟斤拷锟狡帮拷全锟侥★拷 |
Example #1 stristr() 锟斤拷锟斤拷
<?php
$email = 'USER@EXAMPLE.com';
echo stristr($email, 'e'); // 锟斤拷锟� ER@EXAMPLE.com
echo stristr($email, 'e', true); // 锟斤拷 PHP 5.3.0 锟斤拷锟斤拷锟� US
?>
Example #2 锟斤拷锟斤拷锟街凤拷锟斤拷锟侥达拷锟斤拷锟斤拷锟�
<?php
$string = 'Hello World!';
if(stristr($string, 'earth') === FALSE) {
echo '"earth" not found in string';
}
// 锟斤拷锟�: "earth" not found in string
?>
Example #3 使锟矫凤拷锟街凤拷锟斤拷 needle
<?php
$string = 'APPLE';
echo stristr($string, 97); // 97 = 小写锟斤拷母 a
// 锟斤拷锟�: APPLE
?>
Note: 锟剿猴拷锟斤拷锟缴帮拷全锟斤拷锟节讹拷锟斤拷锟狡讹拷锟斤拷