string mb_strstr (
string $haystack ,
string $needle [,
bool $before_needle = false [,
string $encoding =mb_internal_encoding() ]]
)
//mb_strstr() finds the first occurrence of needle in haystack and returns the portion of haystack. If needle is not found, it returns FALSE.
//mb_strstr() 查找了 needle 在 haystack 中首次的出现并返回 haystack 的一部分。 如果 needle 没有找到，它将返回 FALSE。
?php
/**
* Created by PhpStorm.
* User: zhangrongxiang
* Date: 2018/2/1
* Time: 下午10:27
*/
//* * If set to true, it returns all of haystack from the beginning to the first occurrence of needle.
$strstr = mb_strstr( "hello china", "ll", true );
echo $strstr . PHP_EOL; //he
//* If set to false, it returns all of haystack from the first occurrence of needle to the end,
$strstr = mb_strstr( "hello china", "ll", false );
echo $strstr . PHP_EOL;//llo china
//hello china
echo mb_strstr( "hello china", "ll", true ) . mb_strstr( "hello china", "ll", false ) . PHP_EOL;
$strstr = mb_strstr( "hello China,hello PHP", "ll", true );
echo $strstr . PHP_EOL; //he
$strstr = mb_strstr( "hello China,hello PHP", "ll", false );
echo $strstr . PHP_EOL; //llo China,hello PHP
$strstr = mb_strstr( "PHP是世界上最好的语言😄", "最好", true );
echo $strstr.PHP_EOL; //PHP是世界上
$strstr = mb_strstr( "PHP是世界上最好的语言😄", "最好", false );
echo $strstr.PHP_EOL; //最好的语言😄
