PHP strcspn() Function
Example
Output the number of characters found before the character "w" in the string "Hello world!"
<?php
echo strcspn("Hello world!","w");
?>
Definition and Usage
The strcspn() function returns the number of characters found before any specified character in the string search (including spaces).
Tip:Please use strspn() The function returns the number of characters in the string that contain characters from the specified character list.
Note:This function is binary safe.
Syntax
strcspn(string,char,start,length)
| Parameters | Description |
|---|---|
| string | Required. Specify the string to be searched. |
| char | Required. Specify the character to be searched. |
| start | Optional. Specify where to start searching in the string. |
| length | Optional. Specify the length of the string (search how many characters). |
Technical Details
| Return Value: | Returns the number of characters found in the string before finding the specified symbol. |
| PHP Version: | 4+ |
| Update Log: | In PHP 4.3, a new feature was added start and length Parameters. |
More Examples
Example 1
Use all parameters to output the number of characters found before the character "w" in the string "Hello world!"
<?php
echo strcspn("Hello world!","w",0,6); // The starting position is 0, the length of the search string is 6.
?>
