1--TEST-- 2Foreach loop tests - foreach operates on the original array if the array is referenced outside the loop. 3--FILE-- 4<?php 5// From php.net/foreach: 6// "Unless the array is referenced, foreach operates on a copy of the specified array." 7 8echo "\nRemove elements from a referenced array during loop\n"; 9$refedArray=array("original.0", "original.1", "original.2"); 10$ref=&$refedArray; 11foreach ($refedArray as $k=>$v1) { 12 array_pop($refedArray); 13 echo "key: $k; value: $v1\n"; 14} 15 16echo "\nRemove elements from a referenced array during loop, using &\$value\n"; 17$refedArray=array("original.0", "original.1", "original.2"); 18$ref=&$refedArray; 19foreach ($refedArray as $k=>&$v2) { 20 array_pop($refedArray); 21 echo "key: $k; value: $v2\n"; 22} 23 24echo "\nAdd elements to a referenced array during loop\n"; 25$refedArray=array("original.0", "original.1", "original.2"); 26$ref=&$refedArray; 27$count=0; 28foreach ($refedArray as $k=>$v3) { 29 array_push($refedArray, "new.$k"); 30 echo "key: $k; value: $v3\n"; 31 32 if ($count++>5) { 33 echo "Loop detected, as expected.\n"; 34 break; 35 } 36} 37 38echo "\nAdd elements to a referenced array during loop, using &\$value\n"; 39$refedArray=array("original.0", "original.1", "original.2"); 40$ref=&$refedArray; 41$count=0; 42foreach ($refedArray as $k=>&$v4) { 43 array_push($refedArray, "new.$k"); 44 echo "key: $k; value: $v4\n"; 45 46 if ($count++>5) { 47 echo "Loop detected, as expected.\n"; 48 break; 49 } 50} 51 52?> 53--EXPECT-- 54 55Remove elements from a referenced array during loop 56key: 0; value: original.0 57key: 1; value: original.1 58key: 2; value: original.2 59 60Remove elements from a referenced array during loop, using &$value 61key: 0; value: original.0 62key: 1; value: original.1 63 64Add elements to a referenced array during loop 65key: 0; value: original.0 66key: 1; value: original.1 67key: 2; value: original.2 68 69Add elements to a referenced array during loop, using &$value 70key: 0; value: original.0 71key: 1; value: original.1 72key: 2; value: original.2 73key: 3; value: new.0 74key: 4; value: new.1 75key: 5; value: new.2 76key: 6; value: new.3 77Loop detected, as expected. 78 79
