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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 $obj->{$member}; echo ${data[$key]}; echo "${data[$key]}"; // of course, this works echo "\n{${'data'}[$key]}\n"; echo "{$data[$key]}";
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/fCvQh on line 14 xyz Fatal error: Uncaught Error: Undefined constant "member" in /in/fCvQh:10 Stack trace: #0 {main} thrown in /in/fCvQh on line 10
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/fCvQh on line 14 xyz Fatal error: Uncaught Error: Undefined constant "member" in /in/fCvQh:10 Stack trace: #0 {main} thrown in /in/fCvQh on line 10
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
xyz Fatal error: Uncaught Error: Undefined constant "member" in /in/fCvQh:10 Stack trace: #0 {main} thrown in /in/fCvQh on line 10
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
xyz Warning: Use of undefined constant member - assumed 'member' (this will throw an Error in a future version of PHP) in /in/fCvQh on line 10 xyzxyz Warning: Use of undefined constant data - assumed 'data' (this will throw an Error in a future version of PHP) in /in/fCvQh on line 13 Warning: Illegal string offset 'foo' in /in/fCvQh on line 13 Notice: Undefined variable: d in /in/fCvQh on line 13 bar bar bar
Output for 7.3.32 - 7.3.33
xyz Warning: Use of undefined constant member - assumed 'member' (this will throw an Error in a future version of PHP) in /in/fCvQh on line 10 xyzxyz Warning: Use of undefined constant data - assumed 'data' (this will throw an Error in a future version of PHP) in /in/fCvQh on line 13 Warning: Illegal string offset 'foo' in /in/fCvQh on line 13 bar bar bar
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
xyz Notice: Use of undefined constant member - assumed 'member' in /in/fCvQh on line 10 xyzxyz Notice: Use of undefined constant data - assumed 'data' in /in/fCvQh on line 13 Warning: Illegal string offset 'foo' in /in/fCvQh on line 13 Notice: Undefined variable: d in /in/fCvQh on line 13 bar bar bar
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/fCvQh on line 13
Process exited with code 255.
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