Filter helper functions

return true, false, null, zero, '', []

includes/functions.php

@@ -2197,6 +2197,78 @@ function yourls_return_if_not_empty_string( $val ) {
 	return( $val !== '' );
 }
 
+/**
+ * Returns true.
+ *
+ * Useful for returning true to filters easily.
+ *
+ * @since 1.7.1
+ * @return bool True.
+ */
+function yourls_return_true() {
+    return true;
+}
+
+/**
+ * Returns false.
+ *
+ * Useful for returning false to filters easily.
+ *
+ * @since 1.7.1
+ * @return bool False.
+ */
+function yourls_return_false() {
+    return false;
+}
+
+/**
+ * Returns 0.
+ *
+ * Useful for returning 0 to filters easily.
+ *
+ * @since 1.7.1
+ * @return int 0.
+ */
+function yourls_return_zero() {
+    return 0;
+}
+
+/**
+ * Returns an empty array.
+ *
+ * Useful for returning an empty array to filters easily.
+ *
+ * @since 1.7.1
+ * @return array Empty array.
+ */
+function yourls_return_empty_array() {
+    return array();
+}
+
+/**
+ * Returns null.
+ *
+ * Useful for returning null to filters easily.
+ *
+ * @since 1.7.1
+ * @return null Null value.
+ */
+function yourls_return_null() {
+    return null;
+}
+
+/**
+ * Returns an empty string.
+ *
+ * Useful for returning an empty string to filters easily.
+ *
+ * @since 1.7.1
+ * @return string Empty string.
+ */
+function yourls_return_empty_string() {
+    return '';
+}
+
 /**
  * Add a message to the debug log
  *