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<?php error_reporting(E_ALL); class MyArray implements ArrayAccess { public $value; public function __construct($value = null) { $this->value = $value; } public function &offsetGet($offset) { var_dump(__METHOD__); if (!isset($this->value[$offset])) { $this->value[$offset] = null; } return $this->value[$offset]; } public function offsetExists($offset) { var_dump(__METHOD__); return isset($this->value[$offset]); } public function offsetSet($offset, $value) { var_dump(__METHOD__); $this->value[$offset] = $value; } public function offsetUnset($offset) { var_dump(__METHOD__); $this->value[$offset] = null; } } $record = new MyArray([ 'foo' => [ 'bar' => 'baz' ] ]); var_dump(isset($record['foo']['bar'])); var_dump(isset($record['hello']['world']));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Deprecated: Return type of MyArray::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vOeG0 on line 25 Deprecated: Return type of & MyArray::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vOeG0 on line 14 Deprecated: Return type of MyArray::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vOeG0 on line 32 Deprecated: Return type of MyArray::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/vOeG0 on line 39 string(21) "MyArray::offsetExists" string(18) "MyArray::offsetGet" bool(true) string(21) "MyArray::offsetExists" bool(false)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 7.0.6 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
string(21) "MyArray::offsetExists" string(18) "MyArray::offsetGet" bool(true) string(21) "MyArray::offsetExists" bool(false)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.5
string(18) "MyArray::offsetGet" bool(true) string(18) "MyArray::offsetGet" bool(false)
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/vOeG0 on line 47
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/vOeG0 on line 47
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/vOeG0 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/vOeG0 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/vOeG0 on line 5
Process exited with code 255.
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