Example
Print the number of characters found in "Hello world!" before the character "w":
<?php
echo strcspn("Hello world!","w");
?>
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Definition and Usage
The strcspn() function returns the number of characters (including whitespaces) found in a string before any part of the specified characters are found.
Tip: Use the strspn() function to the number of characters found in the string that contains only characters from a specified character list.
Note: This function is binary-safe.
Syntax
strcspn(string,char,start,length)
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to search |
| char | Required. Specifies the characters to search for |
| start | Optional. Specifies where in string to start |
| length | Optional. Specifies the length of the string (how much of the string to search) |
Technical Details
| Return Value: | Returns the number of characters found in a string before any part of the specified characters are found |
|---|---|
| PHP Version: | 4+ |
| Changelog: | The start and length parameters were added in PHP 4.3 |
More Examples
Example 1
Using all parameters to print the number of characters found in "Hello world!" before the character "w":
<?php
echo strcspn("Hello world!","w",0,6);
// The start position is 0 and the length of the search string is 6.
?>
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< PHP String Reference