add idehelper

_ide_helper.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace  {
+    exit("This file should not be included, only analyzed by your IDE");
+}
+
+
+namespace Illuminate\Support {
+
+    /**
+     * Class Collection
+     * @package Illuminate\Support
+     */
+    class Collection
+    {
+
+        /**
+         * Matches two sorted collections based on a comparator callable with O(m+n) efficiency
+         * Accepts callables for matched pairs as well as unmatched elements (on both sides)
+         * Collections can have ordered duplicates, all permutations become matched pairs
+         *
+         * Example:
+         * ```php
+         * collect([ 1,2,4,7,8,9,14 ]))->matchWith(
+         *     collect([ 1,2,5,6,8,10,11,13,14 ]),
+         *     function($a, $b) { return $a <=> $b; },
+         *     function($a, $b) { echo "$a matches $b"; },
+         *     function($a) { echo "$a was not found in b"; },
+         *     function($b) { echo "$b was not found in a"; },
+         * );
+         * ```
+         *
+         * @param Collection $b A collection to match up with
+         * @param callable $comparator A comparator function, to match orderable elements using a <=> b
+         * @param callable $matched A callback to be executed on each matched pair
+         * @param callable $unmatchedA A callback to be executed for each unmatched item in the a collection
+         * @param callable $unmatchedB A callback to be executed on each unmatched item in the b collection
+         * @return $this
+         */
+        public function matchWith(Collection $b, callable $comparator, callable $matched, callable $unmatchedA = null, callable $unmatchedB = null): self
+        {
+            return $this;
+        }
+    }
+}