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PHP stripos() Function

PHP stripos() function is used to find the position of the first occurrence of a given input string in another string.It return an integer value of the position of the first occurrence of the input string. It is case-insensitive. The case-sensitive version of this function is strpos() function.

Syntax:

stripos($string, $search, $start);

Parameter Values

Parameter	Description
string	This is a required parameter. This parameter defines the string to search.
search	This is a required parameter. This parameter defines the string to search for.
start	This is an optional parameter. This parameyter defines where to begin the search.

Here is an example of stripos() function in PHP:

<html>
<body>

<?php
echo stripos("Welcome to PHPTPOINT","php");   // case in-sensitive
?> 

</body>
</html>

Output:
11

Here is an example of stripos() function in PHP:

<html>
<body>

<?php
$str = "Hello Everyone.. Welcome to PHPTPOINT";

echo stripos($str,"welcome",0);
echo "<br>";
echo stripos($str,"welcome",15);
echo "<br>";
echo stripos($str,"welcome",20);  // not found because start position is 20.
?> 

</body>
</html>

Output:
17
17

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