add deprecation notes

Author: rodrigopedra

src/helpers.php

@@ -76,6 +76,9 @@ function array_except($array, $keys)
     /**
      * Return the first element in an array passing a given truth test.
      *
+     * @deprecated A native function with the same name was introduced in PHP 8.5.
+     *             Use Illuminate\Support\Arr::first to keep functionality
+     *
      * @param  array  $array
      * @param  callable|null  $callback
      * @param  mixed  $default
@@ -162,6 +165,9 @@ function array_has($array, $keys)
     /**
      * Return the last element in an array passing a given truth test.
      *
+     * @deprecated A native function with the same name was introduced in PHP 8.5.
+     *             Use Illuminate\Support\Arr::last to keep functionality
+     *
      * @param  array  $array
      * @param  callable|null  $callback
      * @param  mixed  $default
@@ -421,6 +427,9 @@ function str_before($subject, $search)
     /**
      * Determine if a given string contains a given substring.
      *
+     * @deprecated A native function with the same name was introduced in PHP 8.0.
+     *             Use Illuminate\Support\Str::contains to keep functionality
+     *
      * @param  string  $haystack
      * @param  string|array  $needles
      * @return bool