strcspn
(PHP 4, PHP 5)
strcspn — Find length of initial segment not matching mask
說明
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 .
參數
- str1
-
- str2
-
- start
-
The start position of the string to examine.
- length
-
The length of the string to examine.
Return值
Returns the length of the segment as an integer.
更新日誌
| 版本 | 說明 |
|---|---|
| 4.3.0 | The start and length were added |
註釋
Note: 本函式可安全用於二進位對象。