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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


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