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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 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0
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 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.
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