... PHP 3 <= 3.0.18, PHP 4 >= 4.0.0) strtok -- Tokenize string . ... string = "This is\tan example\nstring"; /* Use tab and newline as tokenizing characters as well */ $tok = strtok($string," \n\t"); while ($tok) { echo "Word=$tok<br>"; $tok = strtok(" "); } . ... The behavior when an empty part was found changed with PHP 4.1.0. ... Example 2. ... first_token = strtok('/something', '/'); $second_token = strtok('/'); var_dump ($first_token, $second_token); /* Output: string(0) "" string(9) "something" */...