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Online PHP strspn() function

strspn - Finds the length of the initial segment of a string consisting entirely of characters contained within a given mask

Title

<?php // subject does not start with any characters from mask var_dump(strspn("foo", "o")); // examine two characters from subject starting at offset 1 var_dump(strspn("foo", "o", 1, 2)); // examine one character from subject starting at offset 1 var_dump(strspn("foo", "o", 1, 1)); ?>

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String Functions