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PHP5中文手册

strcspn

(PHP 4, PHP 5)

strcspn — Find length of initial segment not matching mask

说明

int strcspn ( string $str1 , string $str2 [, int $start [, int $length ]] )

Returns the length of the initial segment of str1 which does not contain any of the characters in str2 .

参数

str1
str2
start: The start position of the string to examine.
length: The length of the string to examine.

返回值

Returns the length of the segment as an integer.

更新日志

版本	说明
4.3.0	The `start` and `length` were added

注释

Note: 本函数可安全用于二进制对象。

参见

strspn()