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<?php $domd=new DOMDocument(); $str = "DOMDocument"; var_dump($domd instanceof $str); var_dump($domd instanceof ("DOMDocument")); // ^ is legal. // V is illegal // var_dump($domd instanceof "DOMDocument"); $code = ' var_dump($domd instanceof "DOMDocument"); '; eval($code); // the eval hack is for illustration, make it an error at run-time, rather than compile-time.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
bool(true) bool(true) Parse error: syntax error, unexpected double-quoted string "DOMDocument" in /in/EMRub(13) : eval()'d code on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Parse error: syntax error, unexpected '(' in /in/EMRub on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected '(', expecting T_STRING or T_VARIABLE or '$' in /in/EMRub on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '(', expecting T_STRING or T_VARIABLE or '$' in /in/EMRub on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/EMRub 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 in /in/EMRub on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/EMRub on line 5
Process exited with code 255.
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