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substr_count
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substr_count

Name

substr_count — Counts the occurrences of a string within another string.

Synopsis

int substr_count(string, substring); string string: String to operate on string substring: String to count

Returns

Integer

Description

substr_count() counts the number of times that substring occurs within string . If substring doesn't occur within string , the function returns0.

Version

PHP 4+ since 4.0RC2

Example

Example 1239. Simple script to test for "Canadian-ness" in a string

<?php
// Don't get yer long-undies in a knot - the author is a Canuck! :)

// Set a default value for message
$message = '';

// If a message was posted, clean it up
if (isset($HTTP_POST_VARS['message']))
   $message = striptags(stripslashes(trim($HTTP_POST_VARS['message'])));
?>
<form method="POST">
Please enter a city name and press return:
<input type="text" name="name" value="<?php echo htmlentities($message); ?>" />
</form>
<?php
if (! empty($message)) {
    $gwn_filter = array('hoser','back bacon','take off','toque',' eh','beer','moose','hockey');
    $message = strtolower($message);

   $Canadianness = 0;

    foreach($gwn_filter as $term) {
       $count = substr_count($message, $term);
       $Canadianness += $count * strlen($term);
    }

    $percent = round($Canadianness / strlen($message) * 100);
    echo "Your message was $percent% Canadian.";
}
?>

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.