String function in php with syntax and example. all php string function with example. - YouTube
7 PHP String Functions You Should Know and How To Use Them | by Joshua Otwell | Level Up Coding
PHP String Function | Different Examples of String Function in PHP
PHP Function. - ppt download
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What is STRIPOS function in PHP. | stripos function is one of the string function in php which alllows user to find the first occurance of a substring in a string.