From 6c68b103f5e71309cd305974df4eaed59b8f8142 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Wed, 5 Feb 2020 13:43:05 +0100
Subject: [PATCH] [Php80] Add get_debug_type()

---
 Php80.php     | 33 +++++++++++++++++++++++++++++++++
 README.md     |  1 +
 bootstrap.php |  4 ++++
 3 files changed, 38 insertions(+)

diff --git a/Php80.php b/Php80.php
index 77cc230..31c5188 100644
--- a/Php80.php
+++ b/Php80.php
@@ -14,6 +14,7 @@
 /**
  * @author Ion Bazan <ion.bazan@gmail.com>
  * @author Nico Oelgart <nicoswd@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
  *
  * @internal
  */
@@ -24,6 +25,38 @@ public static function fdiv(float $dividend, float $divisor): float
         return @($dividend / $divisor);
     }
 
+    public static function get_debug_type($value): string
+    {
+        switch (true) {
+            case null === $value: return 'null';
+            case \is_bool($value): return 'bool';
+            case \is_string($value): return 'string';
+            case \is_array($value): return 'array';
+            case \is_int($value): return 'int';
+            case \is_float($value): return 'float';
+            case \is_object($value): break;
+            case $value instanceof \__PHP_Incomplete_Class: return '__PHP_Incomplete_Class';
+            default:
+                if (null === $type = @get_resource_type($value)) {
+                    return 'unknown';
+                }
+
+                if ('Unknown' === $type) {
+                    $type = 'closed';
+                }
+
+                return "resource ($type)";
+        }
+
+        $class = \get_class($value);
+
+        if (false === strpos($class, '@')) {
+            return $class;
+        }
+
+        return (get_parent_class($class) ?: key(class_implements($class)) ?: 'class').'@anonymous';
+    }
+
     public static function preg_last_error_msg(): string
     {
         switch (preg_last_error()) {
diff --git a/README.md b/README.md
index 6d89cbe..ce23ca3 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ This component provides functions added to PHP 8.0 core:
 - [`fdiv`](https://php.net/fdiv)
 - `ValueError` class
 - `FILTER_VALIDATE_BOOL` constant
+- [`get_debug_type`](https://php.net/get_debug_type)
 - [`preg_last_error_msg`](https://php.net/preg_last_error_msg)
 
 More information can be found in the
diff --git a/bootstrap.php b/bootstrap.php
index f239357..b20fb6b 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -23,4 +23,8 @@ function preg_last_error_msg(): string { return p\Php80::preg_last_error_msg();
     if (!defined('FILTER_VALIDATE_BOOL') && defined('FILTER_VALIDATE_BOOLEAN')) {
         define('FILTER_VALIDATE_BOOL', FILTER_VALIDATE_BOOLEAN);
     }
+
+    if (!function_exists('get_debug_type')) {
+        function get_debug_type($value): string { return p\Php80::get_debug_type($value); }
+    }
 }