ZEND_AST_SHELL_EXEC 1185 Zend/zend_ast.c 		case ZEND_AST_SHELL_EXEC:
ZEND_AST_SHELL_EXEC 7205 Zend/zend_compile.c 		case ZEND_AST_SHELL_EXEC:
ZEND_AST_SHELL_EXEC  956 Zend/zend_language_parser.y 	|	'`' backticks_expr '`' { $$ = zend_ast_create(ZEND_AST_SHELL_EXEC, $2); }