67 lines
1.4 KiB
PHP
67 lines
1.4 KiB
PHP
--TEST--
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Passing assignments by reference
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--FILE--
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<?php
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function f(&$a) {
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var_dump($a);
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$a = "a.changed";
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}
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echo "\n\n---> Pass constant assignment by reference:\n";
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try {
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f($a="a.original");
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var_dump($a);
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} catch (Throwable $e) {
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echo "Exception: " . $e->getMessage() ."\n";
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}
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echo "\n\n---> Pass variable assignment by reference:\n";
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try {
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unset($a);
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$a = "a.original";
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f($b = $a);
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var_dump($a);
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} catch (Throwable $e) {
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echo "Exception: " . $e->getMessage() ."\n";
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}
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echo "\n\n---> Pass reference assignment by reference:\n";
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try {
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unset($a, $b);
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$a = "a.original";
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f($b =& $a);
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var_dump($a);
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} catch (Throwable $e) {
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echo "Exception: " . $e->getMessage() ."\n";
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}
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echo "\n\n---> Pass concat assignment by reference:\n";
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try {
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unset($a, $b);
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$b = "b.original";
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$a = "a.original";
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f($b .= $a);
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var_dump($a);
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} catch (Throwable $e) {
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echo "Exception: " . $e->getMessage() ."\n";
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}
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?>
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--EXPECT--
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---> Pass constant assignment by reference:
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Exception: f(): Argument #1 ($a) cannot be passed by reference
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---> Pass variable assignment by reference:
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Exception: f(): Argument #1 ($a) cannot be passed by reference
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---> Pass reference assignment by reference:
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string(10) "a.original"
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string(9) "a.changed"
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---> Pass concat assignment by reference:
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Exception: f(): Argument #1 ($a) cannot be passed by reference
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