Introducing coding standards validation.

vendor/wp-coding-standards/wpcs/WordPress/Sniffs/Arrays/ArrayAssignmentRestrictionsSniff.php

@@ -0,0 +1,64 @@
+<?php
+/**
+ * WordPress Coding Standard.
+ *
+ * @package WPCS\WordPressCodingStandards
+ * @link    https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards
+ * @license https://opensource.org/licenses/MIT MIT
+ */
+
+namespace WordPress\Sniffs\Arrays;
+
+use WordPress\AbstractArrayAssignmentRestrictionsSniff;
+
+/**
+ * Restricts array assignment of certain keys.
+ *
+ * @package    WPCS\WordPressCodingStandards
+ *
+ * @since      0.3.0
+ * @since      0.13.0 Class name changed: this class is now namespaced.
+ *
+ * @deprecated 0.10.0 The functionality which used to be contained in this class has been moved to
+ *                    the WordPress_AbstractArrayAssignmentRestrictionsSniff class.
+ *                    This class is left here to prevent backward-compatibility breaks for
+ *                    custom sniffs extending the old class and references to this
+ *                    sniff from custom phpcs.xml files.
+ *                    This file is also still used to unit test the abstract class.
+ * @see        \WordPress\AbstractArrayAssignmentRestrictionsSniff
+ */
+class ArrayAssignmentRestrictionsSniff extends AbstractArrayAssignmentRestrictionsSniff {
+
+	/**
+	 * Groups of variables to restrict.
+	 *
+	 * Example: groups => array(
+	 *  'groupname' => array(
+	 *      'type'     => 'error' | 'warning',
+	 *      'message'  => 'Dont use this one please!',
+	 *      'keys'     => array( 'key1', 'another_key' ),
+	 *      'callback' => array( 'class', 'method' ), // Optional.
+	 *  )
+	 * )
+	 *
+	 * @return array
+	 */
+	public function getGroups() {
+		return array();
+	}
+
+	/**
+	 * Callback to process each confirmed key, to check value.
+	 *
+	 * @param  string $key   Array index / key.
+	 * @param  mixed  $val   Assigned value.
+	 * @param  int    $line  Token line.
+	 * @param  array  $group Group definition.
+	 * @return mixed         FALSE if no match, TRUE if matches, STRING if matches
+	 *                       with custom error message passed to ->process().
+	 */
+	public function callback( $key, $val, $line, $group ) {
+		return true;
+	}
+
+}