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77 lines
2.1 KiB
PHP
77 lines
2.1 KiB
PHP
--TEST--
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Foreach loop tests - foreach operates on the original array if the array is referenced outside the loop.
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--FILE--
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<?php
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// From php.net/foreach:
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// "Unless the array is referenced, foreach operates on a copy of the specified array."
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echo "\nRemove elements from a referenced array during loop\n";
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$refedArray=array("original.0", "original.1", "original.2");
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$ref=&$refedArray;
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foreach ($refedArray as $k=>$v1) {
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array_pop($refedArray);
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echo "key: $k; value: $v1\n";
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}
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echo "\nRemove elements from a referenced array during loop, using &\$value\n";
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$refedArray=array("original.0", "original.1", "original.2");
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$ref=&$refedArray;
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foreach ($refedArray as $k=>&$v2) {
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array_pop($refedArray);
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echo "key: $k; value: $v2\n";
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}
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echo "\nAdd elements to a referenced array during loop\n";
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$refedArray=array("original.0", "original.1", "original.2");
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$ref=&$refedArray;
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$count=0;
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foreach ($refedArray as $k=>$v3) {
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array_push($refedArray, "new.$k");
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echo "key: $k; value: $v3\n";
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if ($count++>5) {
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echo "Loop detected, as expected.\n";
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break;
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}
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}
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echo "\nAdd elements to a referenced array during loop, using &\$value\n";
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$refedArray=array("original.0", "original.1", "original.2");
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$ref=&$refedArray;
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$count=0;
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foreach ($refedArray as $k=>&$v4) {
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array_push($refedArray, "new.$k");
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echo "key: $k; value: $v4\n";
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if ($count++>5) {
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echo "Loop detected, as expected.\n";
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break;
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}
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}
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?>
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--EXPECT--
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Remove elements from a referenced array during loop
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key: 0; value: original.0
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key: 1; value: original.1
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key: 2; value: original.2
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Remove elements from a referenced array during loop, using &$value
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key: 0; value: original.0
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key: 1; value: original.1
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Add elements to a referenced array during loop
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key: 0; value: original.0
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key: 1; value: original.1
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key: 2; value: original.2
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Add elements to a referenced array during loop, using &$value
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key: 0; value: original.0
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key: 1; value: original.1
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key: 2; value: original.2
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key: 3; value: new.0
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key: 4; value: new.1
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key: 5; value: new.2
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key: 6; value: new.3
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Loop detected, as expected.
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