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run code in 150+ php & hhvm versions
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<?php $obj = new stdClass(); $obj->name = 'Fred'; $obj->job = new stdClass(); $obj->job->position = 'Janitor'; $obj->job->years = 4; print_r($obj); echo 'Years in current job: '.string($obj, 'job->years').PHP_EOL; function string($obj, $path_str) { $val = null; $path = preg_split('/->/', $path_str); $node = $obj; while (($prop = array_shift($path)) !== null) { print_r($node); echo 'Property exists: '.$prop; if (!property_exists($node, $prop)) { $val = null; break; } $node = $node->$prop; $val = $node->$prop; } return $val; }
based on Jn4DW
Output for 5.2.6 - 5.6.28, 7.0.0 - 7.1.0
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Notice: Undefined property: stdClass::$job in /in/WZeIB on line 28 stdClass Object ( [position] => Janitor [years] => 4 ) Property exists: years Notice: Trying to get property of non-object in /in/WZeIB on line 28 Years in current job:
Output for hhvm-3.10.0 - 3.12.0
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Notice: Undefined property: stdClass::$job in /in/WZeIB on line 28 stdClass Object ( [position] => Janitor [years] => 4 ) Property exists: years Notice: Cannot access property on non-object in /in/WZeIB on line 28 Years in current job:
Output for 5.1.0 - 5.2.5
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Notice: Undefined property: stdClass::$job in /in/WZeIB on line 28 stdClass Object ( [position] => Janitor [years] => 4 ) Property exists: years Notice: Trying to get property of non-object in /in/WZeIB on line 28 Years in current job:
Output for 5.0.0 - 5.0.5
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Fatal error: Call to undefined function property_exists() in /in/WZeIB on line 21
Process exited with code 255.
Output for 4.4.5 - 4.4.9
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Fatal error: Call to undefined function: property_exists() in /in/WZeIB on line 21
Process exited with code 255.
Output for 4.3.2 - 4.4.4
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Fatal error: Call to undefined function: property_exists() in /in/WZeIB on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1
stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) stdClass Object ( [name] => Fred [job] => stdClass Object ( [position] => Janitor [years] => 4 ) ) Property exists: job Fatal error: Call to undefined function: property_exists() in /in/WZeIB on line 21