diff options
Diffstat (limited to 'ext/standard/string.c')
| -rw-r--r-- | ext/standard/string.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/ext/standard/string.c b/ext/standard/string.c index 10d5ed976d..58aad8d6b6 100644 --- a/ext/standard/string.c +++ b/ext/standard/string.c @@ -5590,14 +5590,19 @@ PHP_FUNCTION(substr_compare) int s1_len, s2_len; long offset, len=0; zend_bool cs=0; + uint cmp_len; if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ssl|lb", &s1, &s1_len, &s2, &s2_len, &offset, &len, &cs) == FAILURE) { RETURN_FALSE; } - if (ZEND_NUM_ARGS() >= 4 && len < 0) { - php_error_docref(NULL TSRMLS_CC, E_WARNING, "The length must be greater than or equal to zero"); - RETURN_FALSE; + if (ZEND_NUM_ARGS() >= 4 && len <= 0) { + if (len == 0) { + RETURN_LONG(0L); + } else { + php_error_docref(NULL TSRMLS_CC, E_WARNING, "The length must be greater than or equal to zero"); + RETURN_FALSE; + } } if (offset < 0) { @@ -5610,10 +5615,12 @@ PHP_FUNCTION(substr_compare) RETURN_FALSE; } + cmp_len = (uint) (len ? len : MAX(s2_len, (s1_len - offset))); + if (!cs) { - RETURN_LONG(zend_binary_strncmp(s1 + offset, (s1_len - offset), s2, s2_len, (uint)len)); + RETURN_LONG(zend_binary_strncmp(s1 + offset, (s1_len - offset), s2, s2_len, cmp_len)); } else { - RETURN_LONG(zend_binary_strncasecmp_l(s1 + offset, (s1_len - offset), s2, s2_len, (uint)len)); + RETURN_LONG(zend_binary_strncasecmp_l(s1 + offset, (s1_len - offset), s2, s2_len, cmp_len)); } } /* }}} */ |