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Add tests contributed by @jesseschalken
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--TEST--
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list() with keys, evaluation order #2
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--FILE--
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<?php
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// All the following should print 'a' then 'b'
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list($a, $b) = ['a', 'b'];
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var_dump($a);
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var_dump($b);
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list(0 => $a, 1 => $b) = ['a', 'b'];
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var_dump($a);
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var_dump($b);
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list(1 => $b, 0 => $a) = ['a', 'b'];
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var_dump($a);
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var_dump($b);
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$arr = [];
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list($arr[], $arr[]) = ['a', 'b'];
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var_dump($arr[0]);
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var_dump($arr[1]);
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$arr = [];
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list(0 => $arr[], 1 => $arr[]) = ['a', 'b'];
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var_dump($arr[0]);
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var_dump($arr[1]);
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$arr = [];
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list(1 => $arr[], 0 => $arr[]) = ['b', 'a'];
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var_dump($arr[0]);
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var_dump($arr[1]);
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$arr = [];
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list(list(1 => $arr[], 0 => $arr[])) = [['b', 'a']];
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var_dump($arr[0]);
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var_dump($arr[1]);
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$arr = [];
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list('key1' => $arr[], 'key2' => $arr[]) = ['key2' => 'b', 'key1' => 'a'];
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var_dump($arr[0]);
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var_dump($arr[1]);
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// This should print 'foo'
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$a = 0;
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list($a => $a) = ['foo', 'bar'];
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var_dump($a);
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// This should print 'bar' then 'foo'
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$a = 0;
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$b = 1;
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list($b => $a, $a => $c) = ['bar' => 'foo', 1 => 'bar'];
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var_dump($a);
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var_dump($c);
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?>
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--EXPECT--
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(1) "a"
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string(1) "b"
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string(3) "foo"
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string(3) "bar"
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string(3) "foo"
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--TEST--
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list() with keys, evaluation order #3
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--FILE--
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<?php
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$i = 0;
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$a = [
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0 => [
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'b' => 'bar',
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'a' => 'foo',
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],
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1 => 'a',
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3 => 'b',
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];
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list($a[$i++] => $a[$i++], $a[$i++] => $a[$i++]) = $a[$i++];
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var_dump($i); // should be 5
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var_dump($a[2]); // should be 'foo'
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var_dump($a[4]); // should be 'bar'
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?>
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--EXPECT--
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int(5)
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string(3) "foo"
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string(3) "bar"

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