diff --git a/app/index.php b/app/index.php
new file mode 100644
index 0000000000000000000000000000000000000000..1331e48043e877ad5a188e472fbf904773ce2917
--- /dev/null
+++ b/app/index.php
@@ -0,0 +1,20 @@
+<?php
+
+require_once ('repository/IdSearch.php');
+
+$array = [
+    [
+        'id'=>30,
+        'name'=>'Sasha'
+    ],
+    [
+        'id'=>542,
+        'name'=>'Adlan'
+    ],
+    [
+        'id'=>3234,
+        'name'=>'Pavel'
+    ]
+];
+
+var_dump(search($array, 542));
diff --git a/app/repository/IdSearch.php b/app/repository/IdSearch.php
new file mode 100644
index 0000000000000000000000000000000000000000..9d1d818cfed7e2067c6857d8ac0062479c00b80d
--- /dev/null
+++ b/app/repository/IdSearch.php
@@ -0,0 +1,21 @@
+<?php
+
+
+/**
+ * Найдет элемент с указаным id
+ * @param array $array - массив, содержащий элементы со структурой
+ * [
+ * 'id' => 30,
+ * 'name' => 'Jhon',
+ * 'age' => 23,
+ * ]
+ * @param $id - ид искомого элемента
+ * @return array - найденный элемент/ вернет null при его отсутствии*/
+function search($array, $id): ?array {
+    foreach ($array as $item){
+        if ($item['id'] == $id){
+            return $item;
+        }
+    }
+    return null;
+}
\ No newline at end of file