PHP- How can we convert string to slug?

Below is the function to convert string to slug.

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function createSlug($str, $delimiter = '-'){   $slug = strtolower(trim(preg_replace('/[\s-]+/', $delimiter, preg_replace('/[^A-Za-z0-9-]+/', $delimiter, preg_replace('/[&]/', 'and', preg_replace('/[\']/', '', iconv('UTF-8', 'ASCII//TRANSLIT', $str))))), $delimiter));      return $slug;   }

For example:

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$str= 'this is slug'; //If this is the string which we have to convert as slug $createdSlug= createSlug($str); //Call funtion echo $createdSlug; // Print output

Output:

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1	this-is-slug