Hi,

This function takes a regular phrase and formats it into a seo friendly string which can be part of an URL.

<?php
function friendly_seo_string($string, $separator = '-')
{
$string = trim($string);

$string = strtolower($string); // convert to lowercase text

// Recommendation URL: http://www.webcheatsheet.com/php/regular_expressions.php

// Only space, letters, numbers and underscore are allowed

$string = trim(ereg_replace("[^ A-Za-z0-9_]", " ", $string));

/*

"t" (ASCII 9 (0x09)), a tab.
"n" (ASCII 10 (0x0A)), a new line (line feed).
"r" (ASCII 13 (0x0D)), a carriage return. 

*/

$string = ereg_replace("[ tnr]+", "-", $string);

$string = str_replace(" ", $separator, $string);

$string = ereg_replace("[ -]+", "-", $string);

return $string;
}

$str = friendly_seo_string('Lorem Ipsum is simply dummy text.');

// Outputs: lorem-ipsum-is-simply-dummy-text
echo $str;
?>

This string can be added to a friendly URL like this:

http://www.yourdomain.com/info/lorem-ipsum-is-simply-dummy-text.html

Recommendation URLs:

http://www.webcheatsheet.com/php/regular_expressions.php

http://www.php.net/manual/function.ereg-replace.php

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