Added polyfill for mb_ord

photogabble · Feb 13, 2018 · 2825548 · 2825548
1 parent 023cc34
commit 2825548
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Showing 2 changed files with 26 additions and 1 deletion.
diff --git a/composer.json b/composer.json
@@ -28,7 +28,10 @@
   "autoload": {
     "psr-4": {
       "Photogabble\\ConfusableHomoglyphs\\": "src/"
-    }
+    },
+    "files": [
+      "src/helpers.php"
+    ]
   },
   "autoload-dev": {
     "psr-4": {

diff --git a/src/helpers.php b/src/helpers.php
@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Polyfill for mb_ord on PHP versions < 7.2
+ */
+if (!function_exists('mb_ord')) {
+    /**
+     * @author John Slegers
+     * @see https://stackoverflow.com/a/24763271/1225977
+     * @param string $char
+     * @param string $encoding
+     * @return mixed
+     */
+    function mb_ord($char, $encoding = 'UTF-8') {
+        if ($encoding === 'UCS-4BE') {
+            list(, $ord) = (strlen($char) === 4) ? @unpack('N', $char) : @unpack('n', $char);
+            return $ord;
+        } else {
+            return mb_ord(mb_convert_encoding($char, 'UCS-4BE', $encoding), 'UCS-4BE');
+        }
+    }
+}