Optimisation for zend_memnstr when the needle is only a single character. (Patch by Michal Dziemianko - GSoC08)

Author: Scott MacVicar

Zend/zend_operators.h

@@ -220,6 +220,10 @@ zend_memnstr(char *haystack, char *needle, int needle_len, char *end)
 	char *p = haystack;
 	char ne = needle[needle_len-1];
 
+	if (needle_len == 1) {
+		return (char *)memchr(p, *needle, (end-p));
+	}
+
 	end -= needle_len;
 
 	while (p <= end) {