7. (A) Write a PHP program to demonstrate different string functions

7. (A) Write a PHP program to demonstrate different string functions

	<?php
	echo strlen("Hello");
	echo strchr("Hello world!","world");
	echo str_replace("world","Peter","Hello world!");
	echo str_word_count("Hello world!");
	echo strpos("I love php, I love php too!","php");
	echo substr_count("Hello world. The world is nice","world");
	echo substr("Hello world",6);
	echo strtolower("Hello WORLD.");
	echo strtoupper("Hello WORLD.");
	echo strcmp("Hello world!","Hello world!");
	echo strcasecmp("Hello world!","Hello world!");
	?>