Added optional maxlen parameter to file_get_contents().

NEWS

@@ -31,6 +31,7 @@ PHP                                                                        NEWS
 - Added sqlite_fetch_column_types() 3rd argument for arrays. (Ilia)
 - Added optional offset parameter to stream_get_contents() and
   file_get_contents(). (Ilia)
+- Added optional maxlen parameter to file_get_contents(). (Ilia)
 - Added SAPI hook to get the current request time. (Rasmus)
 - Added new functions:
   . array_diff_key() (Andrey)

ext/standard/file.c

@@ -506,7 +506,7 @@ PHP_FUNCTION(get_meta_tags)
 
 /* }}} */
 
-/* {{{ proto string file_get_contents(string filename [, bool use_include_path [, resource context [, long offset]]])
+/* {{{ proto string file_get_contents(string filename [, bool use_include_path [, resource context [, long offset [, long maxlen]]]])
    Read the entire file into a string */
 PHP_FUNCTION(file_get_contents)
 {
@@ -517,12 +517,13 @@ PHP_FUNCTION(file_get_contents)
 	php_stream *stream;
 	int len, newlen;
 	long offset = -1;
+	long maxlen = PHP_STREAM_COPY_ALL;
 	zval *zcontext = NULL;
 	php_stream_context *context = NULL;
 
 	/* Parse arguments */
-	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|br!l",
-				  &filename, &filename_len, &use_include_path, &zcontext, &offset) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|br!ll",
+				  &filename, &filename_len, &use_include_path, &zcontext, &offset, &maxlen) == FAILURE) {
 		return;
 	}
 
@@ -541,7 +542,7 @@ PHP_FUNCTION(file_get_contents)
 	}
 
 	/* uses mmap if possible */
-	if ((len = php_stream_copy_to_mem(stream, &contents, PHP_STREAM_COPY_ALL, 0)) > 0) {
+	if ((len = php_stream_copy_to_mem(stream, &contents, maxlen, 0)) > 0) {
 		
 		if (PG(magic_quotes_runtime)) {
 			contents = php_addslashes(contents, len, &newlen, 1 TSRMLS_CC); /* 1 = free source string */