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    PHP stristr() Function

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    PHP stristr() Function

    PHP stristr() function is used to search for the first occurrence of a given input string inside another string and displays that portion of the latter starting from the first occurrence of the former in the latter.It is case-insensitive. The case-sensitive version of this function is strstr() function.

    Syntax:

    stristr( $string, $search, $before );

    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.
    Before This is an optional parameter. This parameter holds a boolean value which is by default "false". If it is "true", it returns the part of the string before the first occurrence of the search parameter.

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

    <html>
<body>

<?php
echo stristr("A B C D A B C D","c");   // case in-sensitive
?>

</body>
</html>
    Output:
    C  D  A  B  C  D

    Here is an another example of stristr() function in PHP: 

    <html>
<body>

<?php
echo stristr("A B C D E A B C D E.",67);
?>	

</body>
</html>
    Output:
    A  B  C  D
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