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<?php echo (!preg_match("/^[a-z-]+$/i", '4567')) 'false' : 'true'; echo "\n"; echo (!preg_match("/^[a-z-]+$/i", '4567A')) 'false' : 'true';
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected ''false'' (T_CONSTANT_ENCAPSED_STRING), expecting ',' or ';' in /in/XKhoU on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting ',' or ';' in /in/XKhoU on line 2
Process exited with code 255.