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<?php $obj = new stdClass(); $obj->bar = "xyz"; $data = array("foo" => "bar"); $key = "foo"; // echo $obj->${data[$key]}; syntax error echo $obj->{$data[$key]}; $member = $data[$key]; echo $obj->$member; echo "${data[$key]}"; echo "{$data[$key]}"; class A { static function hello(){ echo "Hello World\n"; } } $y[0] = 'hello'; echo "A::${y[0]}"; echo A::${y[0]};
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/VjvOv on line 12 Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/VjvOv on line 23 xyzxyzbarbarA::hello Fatal error: Uncaught Error: Undefined constant "y" in /in/VjvOv:24 Stack trace: #0 {main} thrown in /in/VjvOv on line 24
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
xyzxyzbarbarA::hello Fatal error: Uncaught Error: Undefined constant "y" in /in/VjvOv:24 Stack trace: #0 {main} thrown in /in/VjvOv on line 24
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
xyzxyzbarbarA::hello Warning: Use of undefined constant y - assumed 'y' (this will throw an Error in a future version of PHP) in /in/VjvOv on line 24 Fatal error: Uncaught Error: Access to undeclared static property: A::$y in /in/VjvOv:24 Stack trace: #0 {main} thrown in /in/VjvOv on line 24
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
xyzxyzbarbarA::hello Notice: Use of undefined constant y - assumed 'y' in /in/VjvOv on line 24 Fatal error: Uncaught Error: Access to undeclared static property: A::$y in /in/VjvOv:24 Stack trace: #0 {main} thrown in /in/VjvOv on line 24
Process exited with code 255.
Output for 5.6.0 - 5.6.40
xyzxyzbarbarA::hello Notice: Use of undefined constant y - assumed 'y' in /in/VjvOv on line 24 Fatal error: Access to undeclared static property: A::$y in /in/VjvOv on line 24
Process exited with code 255.
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/VjvOv on line 24
Process exited with code 255.
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