PHP string function

strlen()

This PHP function use to calculate length of a string with include space.

<?php
		echo strlen("Jawab Adda!"); // outputs 11
?>

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str_word_count()

This PHP function is used to count the number of words in a string.

<?php
		echo str_word_count("Jawab Adda!"); // outputs 2
?>

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strrev()

This  PHP  function return reverses a string

<?php
		echo strrev("Jawab Adda!"); // outputs !addA bawaJ
?>

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strpos()

This PHP function use to searches for a specific text within a string.
If a text is found, the it will returns the character position of the first found text. If it will not  found, it will return FALSE.

<?php

		echo strpos("Jawab Adda!", "Adda"); // outputs 6
		//or second example
		echo strpos("Jawab Adda!", ".com"); // no outputs
?>

substr_count()

This PHP function use to count some specific word how many times come in a string.

<?php
echo substr_count("Jawab Adda is Adda where you can find any answer", "Adda"); // outputs 2 
?>

str_replace()

This PHP  function use to replaces some characters with some other characters in a string.

<?php
echo str_replace("Jawab", "Answer", "Jawab Adda!"); // outputs Answer Adda! 
?>