From 19a231ff4e5bce9e9fb24756e9acb6b91e0ac367 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Mon, 6 Apr 2026 13:23:19 +0200
Subject: [PATCH] Fixed: - usage of `$foo{$ix}` is no longer possible, you need
 to explicitly use   `substr()` instead

---
 idna_convert.class.php | 10 +++++-----
 transcode_wrapper.php  |  6 ++----
 uctc.php               | 11 +++++------
 3 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/idna_convert.class.php b/idna_convert.class.php
index ed32dc8..7362d0c 100644
--- a/idna_convert.class.php
+++ b/idna_convert.class.php
@@ -423,7 +423,7 @@ protected function _decode($encoded)
         $delim_pos = strrpos($encoded, '-');
         if ($delim_pos > self::byteLength($this->_punycode_prefix)) {
             for ($k = self::byteLength($this->_punycode_prefix); $k < $delim_pos; ++$k) {
-                $decoded[] = ord($encoded{$k});
+                $decoded[] = ord(substr($encoded, $k, 1));
             }
         }
         $deco_len = count($decoded);
@@ -437,7 +437,7 @@ protected function _decode($encoded)
 
         for ($enco_idx = ($delim_pos) ? ($delim_pos + 1) : 0; $enco_idx < $enco_len; ++$deco_len) {
             for ($old_idx = $idx, $w = 1, $k = $this->_base; 1; $k += $this->_base) {
-                $digit = $this->_decode_digit($encoded{$enco_idx++});
+                $digit = $this->_decode_digit(substr($encoded, $enco_idx++, 1));
                 $idx += $digit * $w;
                 $t = ($k <= $bias) ? $this->_tmin :
                         (($k >= $bias + $this->_tmax) ? $this->_tmax : ($k - $bias));
@@ -864,7 +864,7 @@ protected function _utf8_to_ucs4($input)
         $mode = 'next';
         $test = 'none';
         for ($k = 0; $k < $inp_len; ++$k) {
-            $v = ord($input{$k}); // Extract byte from input string
+            $v = ord(substr($input, $k, 1)); // Extract byte from input string
             if ($v < 128) { // We found an ASCII char - put into stirng as is
                 $output[$out_len] = $v;
                 ++$out_len;
@@ -995,7 +995,7 @@ protected function _ucs4_string_to_ucs4($input)
                 $out_len++;
                 $output[$out_len] = 0;
             }
-            $output[$out_len] += ord($input{$i}) << (8 * (3 - ($i % 4) ) );
+            $output[$out_len] += ord(substr($input, $i, 1)) << (8 * (3 - ($i % 4) ) );
         }
         return $output;
     }
@@ -3458,4 +3458,4 @@ public function singleton($params = array())
                     0x361 => 234, 0x345 => 240
             )
     );
-}
\ No newline at end of file
+}
diff --git a/transcode_wrapper.php b/transcode_wrapper.php
index 6862e40..d56dc59 100644
--- a/transcode_wrapper.php
+++ b/transcode_wrapper.php
@@ -92,7 +92,7 @@ function map_w1252_iso8859_1($string = '')
     if ($string == '') return '';
     $return = '';
     for ($i = 0; $i < strlen($string); ++$i) {
-        $c = ord($string{$i});
+        $c = ord(substr($string, $i, 1));
         switch ($c) {
             case 129: $return .= chr(252); break;
             case 132: $return .= chr(228); break;
@@ -119,7 +119,7 @@ function map_iso8859_1_w1252($string = '')
     if ($string == '') return '';
     $return = '';
     for ($i = 0; $i < strlen($string); ++$i) {
-        $c = ord($string{$i});
+        $c = ord(substr($string, $i, 1));
         switch ($c) {
             case 196: $return .= chr(142); break;
             case 214: $return .= chr(153); break;
@@ -133,5 +133,3 @@ function map_iso8859_1_w1252($string = '')
     }
     return $return;
 }
-
-?>
\ No newline at end of file
diff --git a/uctc.php b/uctc.php
index ea5e476..f2e8b4a 100644
--- a/uctc.php
+++ b/uctc.php
@@ -59,7 +59,7 @@ private static function utf8_ucs4array($input)
         $mode = 'next';
         $test = 'none';
         for ($k = 0; $k < $inp_len; ++$k) {
-            $v = ord($input{$k}); // Extract byte from input string
+            $v = ord(substr($input, $k, 1)); // Extract byte from input string
 
             if ($v < 128) { // We found an ASCII char - put into stirng as is
                 $output[$out_len] = $v;
@@ -176,7 +176,7 @@ private static function utf7_ucs4array($input, $sc = '+')
         $b64     = '';
 
         for ($k = 0; $k < $inp_len; ++$k) {
-            $c = $input{$k};
+            $c = substr($input, $k, 1);
             if (0 == ord($c)) continue; // Ignore zero bytes
             if ('b' == $mode) {
                 // Sequence got terminated
@@ -193,10 +193,10 @@ private static function utf7_ucs4array($input, $sc = '+')
                     $tmp = substr($tmp, -1 * (strlen($tmp) % 2));
                     for ($i = 0; $i < strlen($tmp); $i++) {
                         if ($i % 2) {
-                            $output[$out_len] += ord($tmp{$i});
+                            $output[$out_len] += ord(substr($tmp, $i, 1));
                             $out_len++;
                         } else {
-                            $output[$out_len] = ord($tmp{$i}) << 8;
+                            $output[$out_len] = ord(substr($tmp, $i, 1)) << 8;
                         }
                     }
                     $mode = 'd';
@@ -292,9 +292,8 @@ private static function ucs4_ucs4array($input)
                 $out_len++;
                 $output[$out_len] = 0;
             }
-            $output[$out_len] += ord($input{$i}) << (8 * (3 - ($i % 4) ) );
+            $output[$out_len] += ord(substr($input, $i, 1)) << (8 * (3 - ($i % 4) ) );
         }
         return $output;
     }
 }
-?>
\ No newline at end of file