diff options
Diffstat (limited to 'ext/standard/string.c')
| -rw-r--r-- | ext/standard/string.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/ext/standard/string.c b/ext/standard/string.c index 03930d85bc..39d9bd5e18 100644 --- a/ext/standard/string.c +++ b/ext/standard/string.c @@ -2473,12 +2473,65 @@ static void php_strnatcmp(INTERNAL_FUNCTION_PARAMETERS, int fold_case) fold_case)); } + +/* {{{ proto int strnatcmp(string s1, string s2) + Returns the result of string comparison using 'natural' algorithm */ PHP_FUNCTION(strnatcmp) { php_strnatcmp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0); } +/* }}} */ + +/* {{{ proto int strnatcasecmp(string s1, string s2) + Returns the result of case-insensitive string comparison using 'natural' algorithm */ PHP_FUNCTION(strnatcasecmp) { php_strnatcmp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1); } +/* }}} */ + + +/* {{{ proto int str_count(string haystack, string needle) + Returns the number of times a substring occurs in the string. */ +PHP_FUNCTION(substr_count) +{ + zval **haystack, **needle; + int i, length, count = 0; + char *p, *endp, cmp; + + if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) == FAILURE) { + WRONG_PARAM_COUNT; + } + + convert_to_string_ex(haystack); + convert_to_string_ex(needle); + + if ((*needle)->value.str.len == 0) { + php_error(E_WARNING, "Empty substring"); + RETURN_FALSE; + } else if ((*needle)->value.str.len == 1) { + // Special optimized case to avoid calls to php_memnstr + for (i = 0, p = (*haystack)->value.str.val, + length = (*haystack)->value.str.len, cmp = (*needle)->value.str.val[0]; + i < length; i++) { + if (p[i] == cmp) { + count++; + } + } + } else { + p = (*haystack)->value.str.val; + endp = p + (*haystack)->value.str.len; + while (p <= endp) { + if( (p = php_memnstr(p, (*needle)->value.str.val, (*needle)->value.str.len, endp)) != NULL ) { + p += (*needle)->value.str.len; + count++; + } else { + break; + } + } + } + + RETURN_LONG(count); +} +/* }}} */ |