Fix calculation of output buffer size in wordwrap(). (Thanks to Wez.)

ext/standard/string.c

@@ -662,7 +662,7 @@ PHP_FUNCTION(wordwrap)
 	else {
 		/* Multiple character line break or forced cut */
 		if (linelength > 0) {
-			newtextlen = textlen + (textlen/linelength) * breakcharlen + 1;
+			newtextlen = textlen + (textlen/linelength + 1) * breakcharlen + 1;
 		}
 		else {
 			newtextlen = textlen * (breakcharlen + 1) + 1;

ext/standard/tests/strings/wordwrap.phpt

@@ -27,6 +27,8 @@ $tests = <<<TESTS
 
 "12345|12345|67890" === wordwrap("12345 1234567890", 5, "|", 1)
 
+"123|==1234567890|==123" === wordwrap("123 1234567890 123", 10, "|==", 1)
+
 TESTS;
 
 include('tests/quicktester.inc');