new php 7 functions added, IntlChar stub added

Author: Dennis Stücken

README.md

@@ -1,6 +1,6 @@
 # php7ify
 
-php7ify is a project that brings new php7 classes and exceptions to php 5.x
+php7ify is a project that brings new php7 classes, functions and exceptions to php 5.x
 
 [![Build Status](https://travis-ci.org/dstuecken/php7ify.svg)](https://travis-ci.org/dstuecken/php7ify)
 [![License](https://poser.pugx.org/dstuecken/php7ify/license)](https://packagist.org/packages/dstuecken/php7ify)

composer.json

@@ -31,6 +31,11 @@
       "src/",
       "src/Exceptions/"
     ],
+    "files": [
+      "src/Functions/preg_replace_callback_array.php",
+      "src/Functions/error_clear_last.php",
+      "src/Functions/intdiv.php"
+    ],
     "psr-4": {
       "dstuecken\\Php7ify\\": "src/"
     }

src/Functions/error_clear_last.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Clear the most recent error
+ *
+ * @link    http://php.net/manual/de/function.error-clear-last.php
+ *
+ * @package dstuecken\php7ify
+ * @author  Dennis Stücken <[email protected]>
+ *
+ * @since   7.0
+ */
+if (!function_exists('error_clear_last'))
+{
+    function error_clear_last()
+    {
+        set_error_handler('var_dump', 0);
+        @trigger_error('');
+        restore_error_handler();
+    }
+}

src/Functions/intdiv.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Integer division
+ *
+ * @link    http://php.net/manual/de/function.intdiv.php
+ *
+ * @package dstuecken\php7ify
+ * @author  Dennis Stücken <[email protected]>
+ *
+ * @since   7.0
+ */
+if (!function_exists('intdiv'))
+{
+    function intdiv($dividend, $divisor)
+    {
+        $dividend = (int) $dividend;
+        $divisor  = (int) $divisor;
+
+        if (0 === $divisor)
+        {
+            throw new \DivisionByZeroError('Division by zero');
+        }
+
+        if (-1 === $divisor && ~PHP_INT_MAX === $dividend)
+        {
+            throw new \ArithmeticError('Division of PHP_INT_MIN by -1 is not an integer');
+        }
+
+        return ($dividend - ($dividend % $divisor)) / $divisor;
+    }
+}

src/Functions/preg_replace_callback_array.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Perform a regular expression search and replace using callbacks
+ *
+ * @link    http://php.net/manual/de/function.preg-replace-callback-array.php
+ *
+ * @package dstuecken\php7ify
+ * @author  Dennis Stücken <[email protected]>
+ *
+ * @since   7.0
+ */
+if (!function_exists('preg_replace_callback_array'))
+{
+    function preg_replace_callback_array(array $patterns, $subject, $limit = -1, &$count = 0)
+    {
+        $count  = 0;
+        $result = '' . $subject;
+        if (0 === $limit)
+        {
+            return $result;
+        }
+
+        foreach ($patterns as $pattern => $callback)
+        {
+            $result = preg_replace_callback($pattern, $callback, $result, $limit, $c);
+            $count += $c;
+        }
+
+        return $result;
+    }
+}