- Fixed bug #50952 (allow underscore _ in constants parsed in php.ini files)

Author: Jani Taskinen

Zend/zend_ini_scanner.l

@@ -336,7 +336,7 @@ ANY_CHAR (.|[\n\t])
 NEWLINE	("\r"|"\n"|"\r\n")
 TABS_AND_SPACES [ \t]
 WHITESPACE [ \t]+
-CONSTANT [a-zA-Z][a-zA-Z0-9_]*
+CONSTANT [a-zA-Z_][a-zA-Z0-9_]*
 LABEL [^=\n\r\t;|&$~(){}!"\[]+
 TOKENS [:,.\[\]"'()|^&+-/*=%$!~<>?@{}]
 OPERATORS [&|~()!]