Add tests for str_contains() function

Author: philippta

ext/standard/tests/strings/str_contains.phpt

@@ -0,0 +1,34 @@
+--TEST--
+Test str_contains() function
+--FILE--
+<?php
+/* Prototype: str_contains ( string $haystack , string $needle ) : bool
+   Description: Check if a string contains another string
+   Source code: ext/standard/string.c
+*/
+var_dump(str_contains("test string", "test"));
+var_dump(str_contains("test string", "string"));
+var_dump(str_contains("test string", "strin"));
+var_dump(str_contains("test string", "t s"));
+var_dump(str_contains("test string", "g"));
+var_dump(str_contains("te".chr(0)."st", chr(0)));
+var_dump(str_contains("tEst", "test"));
+var_dump(str_contains("teSt", "test"));
+var_dump(str_contains("", ""));
+var_dump(str_contains("a", ""));
+var_dump(str_contains("", "a"));
+var_dump(str_contains("\\\\a", "\\a"));
+?>
+--EXPECT--
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+bool(false)
+bool(false)
+bool(true)
+bool(true)
+bool(false)
+bool(true)