1--TEST-- 2Test array_shift() function : usage variations - call recursively 3--FILE-- 4<?php 5/* Prototype : mixed array_shift(array &$stack) 6 * Description: Pops an element off the beginning of the array 7 * Source code: ext/standard/array.c 8 */ 9 10/* 11 * Use the result of one call to array_shift 12 * as the $stack argument of another call to array_shift() 13 * When done in one statement causes strict error messages. 14 */ 15 16echo "*** Testing array_shift() : usage variations ***\n"; 17 18$stack = array ( array ( array ('zero', 'one', 'two'), 'un', 'deux'), 'eins', 'zwei'); 19 20// not following strict standards 21echo "\n-- Incorrect Method: --\n"; 22var_dump(array_shift(array_shift(array_shift($stack)))); 23 24$stack = array (array( array('zero', 'one', 'two'), 'un', 'deux'), 'eins', 'zwei'); 25// correct way of doing above: 26echo "\n-- Correct Method: --\n"; 27$result1 = array_shift($stack); 28$result2 = array_shift($result1); 29var_dump(array_shift($result2)); 30 31echo "Done"; 32?> 33--EXPECTF-- 34*** Testing array_shift() : usage variations *** 35 36-- Incorrect Method: -- 37 38Strict Standards: Only variables should be passed by reference in %s on line %d 39 40Strict Standards: Only variables should be passed by reference in %s on line %d 41string(4) "zero" 42 43-- Correct Method: -- 44string(4) "zero" 45Done 46
