Enforce literals in certain macros (#10111)

These macros are designed only for literals. This is a
standards compliant trick to ensure they are literals.

For example, these are the same:

    "Hello" " world"
    "Hello world"

Author: morrisonlevi

Zend/zend_string.h

@@ -371,10 +371,10 @@ static zend_always_inline bool zend_string_equals(const zend_string *s1, const z
 	(ZSTR_LEN(s1) == ZSTR_LEN(s2) && !zend_binary_strcasecmp(ZSTR_VAL(s1), ZSTR_LEN(s1), ZSTR_VAL(s2), ZSTR_LEN(s2)))
 
 #define zend_string_equals_literal_ci(str, c) \
-	(ZSTR_LEN(str) == sizeof(c) - 1 && !zend_binary_strcasecmp(ZSTR_VAL(str), ZSTR_LEN(str), (c), sizeof(c) - 1))
+	(ZSTR_LEN(str) == sizeof("" c) - 1 && !zend_binary_strcasecmp(ZSTR_VAL(str), ZSTR_LEN(str), (c), sizeof(c) - 1))
 
 #define zend_string_equals_literal(str, literal) \
-	zend_string_equals_cstr(str, literal, strlen(literal))
+	zend_string_equals_cstr(str, "" literal, sizeof(literal) - 1)
 
 static zend_always_inline bool zend_string_starts_with_cstr(const zend_string *str, const char *prefix, size_t prefix_length)
 {