ptarjan
60 linhas
1.1 KiB
PHP
60 linhas
1.1 KiB
PHP
class ArrayWrap implements arrayaccess {
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private $x;
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public function __construct($x) {
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$this->x = $x;
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}
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public function offsetSet($offset, $value) {
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$this->x[$offset] = $value;
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}
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public function offsetExists($offset) {
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return isset($this->x[$offset]);
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}
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public function offsetUnset($offset) {
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unset($this->x[$offset]);
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}
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public function offsetGet($offset) {
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return $this->x[$offset];
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}
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}
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$o = new ArrayWrap(array(0, 1, 2));
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function f1($x) {
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return isset($x[0]) && $x[0];
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}
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var_dump(f1(null));
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var_dump(f1(array()));
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var_dump(f1(array(0)));
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var_dump(f1(''));
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var_dump(f1('a'));
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var_dump(f1($o));
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function f2($x) {
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if (!is_null($x[0])) var_dump($x[0]);
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var_dump($x[0]);
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}
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f2(array(0 => array()));
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f2(array());
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f2('');
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f2($o);
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f2(null);
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function f3($x) {
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foreach ($x['foo'] as $k => $v) {
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if ($v) unset($x['foo'][$k]);
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}
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var_dump($x);
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}
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f3(array('foo' => array(0,1,2,3)));
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function f4($x) {
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var_dump($x[0][1]);
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unset($x[0][1]);
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var_dump($x[0][1]);
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}
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f4(array(array(1 => new stdClass())));
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function f5($x) {
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var_dump(md5($x[0]), $x[0]);
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}
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f5('foobar');
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