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# strcspn

(PHP 3 >= 3.0.3, PHP 4, PHP 5)

strcspn -- Find length of initial segment not matching mask

## Description

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`.

As of PHP 4.3.0, strcspn() accepts two optional integer parameters that can be used to define the `start` position and the `length` of the string to examine.

> Note: This function is binary-safe.

See also strspn().

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