Allow str_contains to take an array.

Signed-off-by: Taylor Otwell <taylorotwell@gmail.com>

laravel/helpers.php

@@ -341,12 +341,17 @@ function ends_with($haystack, $needle)
  * Determine if a given string contains a given sub-string.
  *
  * @param  string        $haystack
- * @param  string  $needle
+ * @param  string|array  $needle
  * @return bool
  */
 function str_contains($haystack, $needle)
 {
-	return strpos($haystack, $needle) !== false;
+	foreach ((array) $needle as $n)
+	{
+		if (strpos($haystack, $n) !== false) return true;
+	}
+
+	return false;
 }
 
 /**
@@ -362,17 +367,6 @@ function str_finish($value, $cap)
 }
 
 /**
- * Determine if the given object has a toString method.
- *
- * @param  object  $value
- * @return bool
- */
-function str_object($value)
-{
-	return is_object($value) and method_exists($value, '__toString');
-}
-
-/**
  * Get the root namespace of a given class.
  *
  * @param  string  $class