diff --git a/includes/common.php b/includes/common.php
index 413cae5671..9d79a0936d 100644
--- a/includes/common.php
+++ b/includes/common.php
@@ -1336,3 +1336,54 @@ function ResolveGlues($tables,$target,$x=0,$hist=array(),$last=array()) {
     return false;
 }
 
+/**
+ * Determine if a given string contains a given substring.
+ *
+ * @param  string  $haystack
+ * @param  string|array  $needles
+ * @return bool
+ */
+function str_contains($haystack, $needles)
+{
+    foreach ((array) $needles as $needle) {
+        if ($needle != '' && strpos($haystack, $needle) !== false) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Determine if a given string ends with a given substring.
+ *
+ * @param  string  $haystack
+ * @param  string|array  $needles
+ * @return bool
+ */
+function ends_with($haystack, $needles)
+{
+    foreach ((array)$needles as $needle) {
+        if ((string)$needle === substr($haystack, -strlen($needle))) {
+            return true;
+        }
+    }
+    return false;
+}
+
+
+/**
+ * Determine if a given string starts with a given substring.
+ *
+ * @param  string $haystack
+ * @param  string|array $needles
+ * @return bool
+ */
+function starts_with($haystack, $needles)
+{
+    foreach ((array)$needles as $needle) {
+        if ($needle != '' && strpos($haystack, $needle) === 0) {
+            return true;
+        }
+    }
+    return false;
+}