Program 1
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<head><title>String in PHP Application</title>
<body>
<pre>
<center>
<?php
// $mystr="Data flair Free php course with free notes with Free certificate FREE code";
// //$n=strpos($mystr,"free",13);
// // $n=strrpos($mystr,"free");
// //$n=stripos($mystr,"free");
// $n=strripos($mystr,"free");
// echo $n;
$email="rajesh@gmail.com";
$p=strpos($email,"@");
if($p>0)
{
$p1=strpos($email,".",$p+1);
if($p1>0)
echo "<font color=green size=5>Valid email id</font>";
else
echo "<font color=red size=5>Invalid email id</font>";
}
else
echo "<font color=red size=5>Invalid email id</font>";
//strpos()
//strrpos()
//stripos()
//strripos()
?>
</pre>
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</body>
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