From cd2b5339028ce16dd4da734fa176bc72fa26e1fd Mon Sep 17 00:00:00 2001
From: Banana <johannes.kessler@bechtle.com>
Date: Mon, 24 Jun 2013 10:56:24 +0200
Subject: [PATCH] new functions and how to added about serialized data and how
 to try to fix them

---
 .../repair-serialized-string.php              | 77 ++++++++++++++++++
 single-functions/var-dump-to-array.php        | 79 +++++++++++++++++++
 2 files changed, 156 insertions(+)
 create mode 100644 methods-and-how-to/repair-serialized-string.php
 create mode 100644 single-functions/var-dump-to-array.php

diff --git a/methods-and-how-to/repair-serialized-string.php b/methods-and-how-to/repair-serialized-string.php
new file mode 100644
index 0000000..7898d41
--- /dev/null
+++ b/methods-and-how-to/repair-serialized-string.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ *  dolphin. Collection of useful PHP skeletons.
+ *  Copyright (C) 2013  Johannes 'Banana' Keßler
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
+ *
+ * You should have received a copy of the
+ * COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+ * along with this program.  If not, see http://www.sun.com/cddl/cddl.html
+ */
+
+/**
+ * how to "repair" an serilized string to get the data back.
+ * it can not solve everything but it might help to recover some otherwise lost data
+ */
+
+/**
+ * the error message "Error at offset"
+ * this inticates a malformed string. with the following method you can 
+ * find out where and what could be the error
+ * At first use the exact offset from the error message and choose a length of 3
+ * then you can get backwards and choose a longer range to identify the error
+ * if you have utf-8 data, make sure you set the right encoding header.
+ */
+var_export(substr($serializedStr, OFFSET, LENGTH););
+
+/**
+ * there is a better way to store and save the data to avoid malformed data
+ */
+$toDatabse = base64_encode(serialize($data));  // Save to database
+$fromDatabase = unserialize(base64_decode($data)); //Getting Save Format
+
+/**
+ * finding the error in the serilized string.
+ * based on a idea from stackoverflow
+ *
+ * @param string The serilized string
+ */
+function findSerializeError($data1) {
+    echo "<pre>";
+    $data2 = preg_replace ( '!s:(\d+):"(.*?)";!e', "'s:'.strlen('$2').':\"$2\";'",$data1 );
+    $max = (strlen ( $data1 ) > strlen ( $data2 )) ? strlen ( $data1 ) : strlen ( $data2 );
+
+    echo $data1 . PHP_EOL;
+    echo $data2 . PHP_EOL;
+
+    for($i = 0; $i < $max; $i ++) {
+
+        if (@$data1 {$i} !== @$data2 {$i}) {
+
+            echo "Diffrence ", @$data1 {$i}, " != ", @$data2 {$i}, PHP_EOL;
+            echo "\t-> ORD number ", ord ( @$data1 {$i} ), " != ", ord ( @$data2 {$i} ), PHP_EOL;
+            echo "\t-> Line Number = $i" . PHP_EOL;
+
+            $start = ($i - 20);
+            $start = ($start < 0) ? 0 : $start;
+            $length = 40;
+
+            $point = $max - $i;
+            if ($point < 20) {
+                $rlength = 1;
+                $rpoint = - $point;
+            } else {
+                $rpoint = $length - 20;
+                $rlength = 1;
+            }
+
+            echo "\t-> Section Data1  = ", substr_replace ( substr ( $data1, $start, $length ), "<b style=\"color:green\">{$data1 {$i}}</b>", $rpoint, $rlength ), PHP_EOL;
+            echo "\t-> Section Data2  = ", substr_replace ( substr ( $data2, $start, $length ), "<b style=\"color:red\">{$data2 {$i}}</b>", $rpoint, $rlength ), PHP_EOL;
+        }
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/single-functions/var-dump-to-array.php b/single-functions/var-dump-to-array.php
new file mode 100644
index 0000000..5053f05
--- /dev/null
+++ b/single-functions/var-dump-to-array.php
@@ -0,0 +1,79 @@
+<?php
+
+/**
+ *  dolphin. Collection of useful PHP skeletons.
+ *  Copyright (C) 2013  Johannes 'Banana' Keßler
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
+ *
+ * You should have received a copy of the
+ * COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+ * along with this program.  If not, see http://www.sun.com/cddl/cddl.html
+ */
+
+
+/**
+ * can return the output of var_dump() into a variable.
+ * nested and complex strutures are supported.
+ * based on an idea from stackoverflow 
+ *
+ * @param string The output of var_dump()
+ */
+function var_dump_to_variable($str) {
+
+	if (strpos($str, "\n") === false) {
+		//Add new lines:
+		$regex = array(
+				'#(\\[.*?\\]=>)#',
+				'#(string\\(|int\\(|float\\(|array\\(|NULL|object\\(|})#',
+		);
+		$str = preg_replace($regex, "\n\\1", $str);
+		$str = trim($str);
+	}
+	$regex = array(
+			'#^\\040*NULL\\040*$#m',
+			'#^\\s*array\\((.*?)\\)\\s*{\\s*$#m',
+			'#^\\s*string\\((.*?)\\)\\s*(.*?)$#m',
+			'#^\\s*int\\((.*?)\\)\\s*$#m',
+			'#^\\s*float\\((.*?)\\)\\s*$#m',
+			'#^\\s*\[(\\d+)\\]\\s*=>\\s*$#m',
+			'#\\s*?\\r?\\n\\s*#m',
+	);
+	$replace = array(
+			'N',
+			'a:\\1:{',
+			's:\\1:\\2',
+			'i:\\1',
+			'd:\\1',
+			'i:\\1',
+			';'
+	);
+	$serialized = preg_replace($regex, $replace, $str);
+	$func = create_function(
+			'$match',
+			'return "s:".strlen($match[1]).":\\"".$match[1]."\\"";'
+	);
+	$serialized = preg_replace_callback(
+			'#\\s*\\["(.*?)"\\]\\s*=>#',
+			$func,
+			$serialized
+	);
+	$func = create_function(
+			'$match',
+			'return "O:".strlen($match[1]).":\\"".$match[1]."\\":".$match[2].":{";'
+	);
+	$serialized = preg_replace_callback(
+			'#object\\((.*?)\\).*?\\((\\d+)\\)\\s*{\\s*;#',
+			$func,
+			$serialized
+	);
+	$serialized = preg_replace(
+			array('#};#', '#{;#'),
+			array('}', '{'),
+			$serialized
+	);
+
+	return unserialize($serialized);
+}
+?>
\ No newline at end of file
-- 
2.39.5