PHP function strspn()
Finds the length of the first segment of a string consisting
Availability in PHP 4.0
Finds the length of the first segment of a string consisting
Parameters
| Parameter | Data type | Default value | Note |
|---|---|---|---|
$subject |
string |
not | The string to examine. |
$mask |
string |
not | The list of allowable characters to include in counted segments. |
$start |
int |
null, | The position in subject to start searching. |
$length |
int |
null | The length of the segment from subject to examine. |
Return values
int
the length of the initial segment of str1 which consists entirely of characters in str2.
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