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public php v1 · immutable<?php $data = array( 'one', 'two', 'three', 'four', 'five' ); print_r($data); /* Outputs: Array ( [0] => one [1] => two [2] => three [3] => four [4] => five ) */ $new = create_function('$a, $b', 'return 0;'); usort($data, $new()); echo $new; // Gives warnings about missing argument 1 & 2 // and usort being given an invalid comparison function. print_r($data); /* Outputs: Array ( [0] => five [1] => four [2] => three [3] => two [4] => one ) */?>