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MySQL_DB_Diff.php
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<?php
/**
* Created by IntelliJ IDEA.
* User: chenzhidong
* Date: 13-10-21
* Time: 下午7:20
* Version: 1.0
*/
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache');
if (isset($_POST['submit'])) {
if (isset($_POST['action']) && 'diff' == $_POST['action']) {
$new_host = trim($_POST['new_host']);
$new_user = trim($_POST['new_user']);
$new_pass = trim($_POST['new_pass']);
$new_db = trim($_POST['new_db']);
$old_host = trim($_POST['old_host']);
$old_user = trim($_POST['old_user']);
$old_pass = trim($_POST['old_pass']);
$old_db = trim($_POST['old_db']);
if (!empty($new_host) && !empty($new_user) && !empty($new_pass) && !empty($new_db) && !empty($old_host) && !empty($old_user) && !empty($old_pass) && !empty($old_db)) {
$new_errors = [];
$old_errors = [];
$new = get_db_detail($new_host, $new_user, $new_pass, $new_db, $new_errors);
$old = get_db_detail($old_host, $old_user, $old_pass, $old_db, $old_errors);
if (!empty($new_errors) || !empty($old_errors)) {
showform($_POST, array_merge($new_errors, $old_errors));
} else {
$diff = compare_database($new, $old);
if (empty($diff['table']) && empty($diff['field']) && empty($diff['index'])) {
showform($_POST, ['These two database a exact same, no need to sync anything.']);
} else {
$sqls = build_query($diff);
showdiff($old_host, $old_user, $old_pass, $old_db, $sqls);
}
}
} else {
showform($_POST, ['Please fill both databases\' information']);
}
} elseif (isset($_POST['action']) && 'write' == $_POST['action']) {
$old_host = trim($_POST['old_host']);
$old_user = trim($_POST['old_user']);
$old_pass = trim($_POST['old_pass']);
$old_db = trim($_POST['old_db']);
$sqls = unserialize(trim(html_entity_decode($_POST['sqls'])));
if (!isset($_POST['keys'])) {
showdiff($old_host, $old_user, $old_pass, $old_db, $sqls, ['No action chosen']);
} else {
$keys = $_POST['keys'];
if (!empty($old_host) && !empty($old_user) && !empty($old_pass) && !empty($old_db) && !empty($keys) && is_array($keys) && !empty($sqls) && is_array($sqls)) {
$errors = [];
$chosen = [];
foreach ($keys as $key) {
$chosen[] = $sqls[$key];
}
$result = update_db($old_host, $old_user, $old_pass, $old_db, $chosen, $errors);
if (!empty($errors)) {
showdiff($old_host, $old_user, $old_pass, $old_db, $sqls, $errors, $keys);
} else {
showform(null, ['Sync succeed']);
}
} else {
showdiff($old_host, $old_user, $old_pass, $old_db, $sqls);
}
}
} else {
showform($_POST);
}
} else {
showform();
}
function getheader($title)
{
echo <<<EOC
<html>
<head>
<title>${title} —— MySQL_DB_Diff By github.com/sillydong</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">
body{background-color:#FFFFDD;}
textarea{width:300px;height:100px;}
.title{padding-top:20px;padding-bottom:35px;text-align:center;font-weight:bold;font-size:14px;}
/* .submit{margin:8px;font-weight:bold;font-size:13px;width:515px;text-align:right;} */
.note{margin:8px;font-weight:bold;font-size:13px;}
.red{color:red;}
.inside{padding:8px;}
.products-list{width:100%;}
.product{width:100%;padding:8px;border-top:1px solid black;}
.border_red{border: 1px solid red;}
.short{width:40px;}
.middle{width:120px;}
.long{width:360px;}
</style>
</head>
<body>
EOC;
}
function getfooter()
{
echo <<<EOD
</body>
</html>
EOD;
}
function showform($post = null, $errors = null)
{
getheader('Sync MySQL Database');
$error_html = '<div>';
if (!empty($errors)) {
foreach ($errors as $error) {
$error_html .= "<p class='red'>" . $error . '</p>';
}
}
$error_html .= '</div>';
$form_html = '
<div style="margin:20px 200px 30px 200px;">
<div class="title">Sync MySQL Database —— MySQL_DB_Diff</div>
' . $error_html . '
<form method="POST">
<table width="100%" border="0" cellpadding="5" cellspacing="0">
<tr>
<td>New DB host:</td>
<td><input name="new_host" type="text" value="' . (isset($post['new_host']) ? $post['new_host'] : '') . '" size="50" autocomplete="off" /></td>
<td>Old DB host:</td>
<td><input name="old_host" type="text" value="' . (isset($post['old_host']) ? $post['old_host'] : '') . '" size="50" autocomplete="off" /></td>
</tr>
<tr>
<td>New DB username:</td>
<td><input name="new_user" type="text" value="' . (isset($post['new_user']) ? $post['new_user'] : '') . '" size="50" autocomplete="off" /></td>
<td>Old DB username:</td>
<td><input name="old_user" type="text" value="' . (isset($post['old_user']) ? $post['old_user'] : '') . '" size="50" autocomplete="off" /></td>
</tr>
<tr>
<td>New DB password:</td>
<td><input name="new_pass" type="password" value="' . (isset($post['new_pass']) ? $post['new_pass'] : '') . '" size="50" autocomplete="off" /></td>
<td>Old DB password:</td>
<td><input name="old_pass" type="password" value="' . (isset($post['old_pass']) ? $post['old_pass'] : '') . '" size="50" autocomplete="off" /></td>
</tr>
<tr>
<td>New DB name:</td>
<td><input name="new_db" type="text" value="' . (isset($post['new_db']) ? $post['new_db'] : '') . '" size="50" autocomplete="off" /></td>
<td>Old DB name:</td>
<td><input name="old_db" type="text" value="' . (isset($post['old_db']) ? $post['old_db'] : '') . '" size="50" autocomplete="off" /></td>
</tr>
<tr>
<td><input type="hidden" name="action" value="diff" /></td>
<td colspan="2" align="center"><input type="submit" name="submit" value="Submit" /></td>
<td> </td>
</tr>
<tr>
<td colspan="4"><span class="red">注意:程序无法判断修改表名的情况，如果继续操作，会删除原表新建一张表，原来的数据全部丢失。<br /> 新指的是包含较新结构的数据库，一般为本地数据库，旧指的是未更新修改的数据库，一般为服务器上数据库。<br /> 数据库操作有风险，请审查生成的SQL语句后执行提交，发生任何问题责任自负。</span></td>
</tr>
<tr>
<td colspan="4"><span class="red">Attention: This simple program is not able to judge table renaming action. If you have renamed a table and go on with generated statements, it will delete the old table and create a new table, thus the data will all lost. "New DB" means the database instance containing newer structure, usually your local database which you made changes first. "Old DB" means the database instance which is not updated, usually it should be the production environment database. Any database structure modification is dangerous, it may cause data lost. Please be serious and audit all generated statements and then submit to execute them. </span></td>
</tr>
<tr>
<td colspan="4"><span class="red">Creator:傻东 <a href="https://sillydong.com" target="_blank">sillydong.com</a>, <a href="https://github.com/sillydong" target="_blank">github.com/sillydong</a></span></td>
</tr>
</table>
</form>
</div>';
echo $form_html;
getfooter();
}
function showdiff($old_host, $old_user, $old_pass, $old_db, $sqls, $errors = [], $keys = [])
{
getheader('Diff Result');
$table_html = '';
foreach ($sqls as $key => $sql) {
$table_html .= '<tr><td><input type="checkbox" name="keys[]" id="key_' . $key . '" value="' . $key . '"' . (in_array($key, $keys) ? 'checked="checked"' : '') . ' /></td><td><label for="key_' . $key . '">' . htmlentities($sql) . '</label></td></tr>';
}
$server_html = '<input type="hidden" name="old_host" value="' . $old_host . '" /><input type="hidden" name="old_user" value="' . $old_user . '" /><input type="hidden" name="old_pass" value="' . $old_pass . '" /><input type="hidden" name="old_db" value="' . $old_db . '"/>';
$error_html = '<div>';
if (!empty($errors)) {
foreach ($errors as $error) {
$error_html .= "<p class='red'>" . $error . '</p>';
}
}
$error_html .= '</div>';
$form_html = '
<div style="margin:20px 200px 30px 200px;">
<div class="title"Diff Result —— MySQL_DB_Diff </div>
' . $error_html . '
<p>Total: ' . count($sqls) . '</p>
<form method="POST">
<table width="100%" border="0" cellpadding="5" cellspacing="0">
' . $table_html . '
<tr>
<td><input type="hidden" name="action" value="write" /><input type="hidden" name="sqls" value="' . htmlentities(serialize($sqls)) . '" />' . $server_html . '</td>
<td><input type="submit" name="submit" value="Submit" onclick="return confirm(\'Sure to execute statements?\')"/></td>
</tr>
</table>
</form>
</div>';
echo $form_html;
getfooter();
}
function compare_database($new, $old)
{
$diff = ['table' => [], 'field' => [], 'index' => []];
// table
foreach ($old['table'] as $table_name => $table_detail) {
if (!isset($new['table'][$table_name])) {
$diff['table']['drop'][$table_name] = $table_name;
} // drop table
}
foreach ($new['table'] as $table_name => $table_detail) {
if (!isset($old['table'][$table_name])) {
// create table
$diff['table']['create'][$table_name] = $table_detail;
$diff['field']['create'][$table_name] = $new['field'][$table_name];
$diff['index']['create'][$table_name] = $new['index'][$table_name];
} else {
// compare table
$old_detail = $old['table'][$table_name];
$change = [];
if ($table_detail['Engine'] !== $old_detail['Engine']) {
$change['Engine'] = $table_detail['Engine'];
}
if ($table_detail['Row_format'] !== $old_detail['Row_format']) {
$change['Row_format'] = $table_detail['Row_format'];
}
if ($table_detail['Collation'] !== $old_detail['Collation']) {
$change['Collation'] = $table_detail['Collation'];
}
//if($table_detail['Create_options']!=$old_detail['Create_options'])
// $change['Create_options']=$table_detail['Create_options'];
if ($table_detail['Comment'] !== $old_detail['Comment']) {
$change['Comment'] = $table_detail['Comment'];
}
if (!empty($change)) {
$diff['table']['change'][$table_name] = $change;
}
}
}
//index
foreach ($old['index'] as $table => $indexs) {
if (isset($new['index'][$table])) {
$new_indexs = $new['index'][$table];
foreach ($indexs as $index_name => $index_detail) {
if (!isset($new_indexs[$index_name])) {
// drop index
$diff['index']['drop'][$table][$index_name] = $index_name;
}
}
} else {
if (!isset($diff['table']['drop'][$table])) {
foreach ($indexs as $index_name => $index_detail) {
$diff['index']['drop'][$table][$index_name] = $index_name;
}
}
}
}
foreach ($new['index'] as $table => $indexs) {
if (isset($old['index'][$table])) {
$old_indexs = $old['index'][$table];
foreach ($indexs as $index_name => $index_detail) {
if (isset($old_indexs[$index_name])) {
// compare index
if ($index_detail['Non_unique'] !== $old_indexs[$index_name]['Non_unique'] || $index_detail['Column_name'] !== $old_indexs[$index_name]['Column_name'] || $index_detail['Collation'] !== $old_indexs[$index_name]['Collation'] || $index_detail['Index_type'] !== $old_indexs[$index_name]['Index_type']) {
$diff['index']['drop'][$table][$index_name] = $index_name;
$diff['index']['add'][$table][$index_name] = $index_detail;
}
} else {
// create index
$diff['index']['add'][$table][$index_name] = $index_detail;
}
}
} else {
if (!isset($diff['table']['create'][$table])) {
foreach ($indexs as $index_name => $index_detail) {
$diff['index']['add'][$table][$index_name] = $index_detail;
}
}
}
}
//fields
foreach ($old['field'] as $table => $fields) {
if (isset($new['field'][$table])) {
$new_fields = $new['field'][$table];
foreach ($fields as $field_name => $field_detail) {
if (!isset($new_fields[$field_name])) {
// field not exists, needs to delete
$diff['field']['drop'][$table][$field_name] = $field_detail;
}
}
}
}
foreach ($new['field'] as $table => $fields) {
if (isset($old['field'][$table])) {
$old_fields = $old['field'][$table];
$last_field = '';
foreach ($fields as $field_name => $field_detail) {
if (isset($old_fields[$field_name])) {
// field exists, needs to compare
if ($field_detail['Type'] !== $old_fields[$field_name]['Type'] || $field_detail['Collation'] !== $old_fields[$field_name]['Collation'] || $field_detail['Null'] !== $old_fields[$field_name]['Null'] || $field_detail['Default'] !== $old_fields[$field_name]['Default'] || $field_detail['Extra'] !== $old_fields[$field_name]['Extra'] || $field_detail['Comment'] !== $old_fields[$field_name]['Comment']) {
$diff['field']['change'][$table][$field_name] = $field_detail;
}
} else {
// field not exists, needs to create
$field_detail['After'] = $last_field;
$diff['field']['add'][$table][$field_name] = $field_detail;
}
$last_field = $field_name;
}
}
}
return $diff;
}
function get_db_detail($server, $username, $password, $database, &$errors = [])
{
$connection = @mysqli_connect($server, $username, $password);
if (false === $connection) {
$errors[] = 'Fail to connect DB server:' . $server . ':' . $username . ':' . $password . ':' . $database;
return false;
}
$serverset = 'character_set_connection=utf8, character_set_results=utf8, character_set_client=binary';
$serverset .= @mysqli_get_server_info($connection) > '5.0.1' ? ', sql_mode=\'\'' : '';
@mysqli_query($connection, "SET ${serverset}");
if (!@mysqli_select_db($connection, $database)) {
$errors[] = 'Fail to select database:' . $database;
@mysqli_close($connection);
return false;
}
$detail = ['table' => [], 'field' => [], 'index' => []];
$tables = query($connection, 'show table status');
if ($tables) {
foreach ($tables as $key_table => $table) {
$detail['table'][$table['Name']] = $table;
//fields
$fields = query($connection, 'show full fields from `' . $table['Name'] . '`');
if ($fields) {
foreach ($fields as $key_field => $field) {
$fields[$field['Field']] = $field;
unset($fields[$key_field]);
}
$detail['field'][$table['Name']] = $fields;
} else {
$errors[] = 'Fail to get fields of table:' . $database . ':' . $table['Name'];
}
//index
$indexes = query($connection, 'show index from `' . $table['Name'] . '`');
if ($indexes) {
foreach ($indexes as $key_index => $index) {
if (!isset($indexes[$index['Key_name']])) {
$index['Column_name'] = [$index['Seq_in_index'] => $index['Column_name']];
$indexes[$index['Key_name']] = $index;
} else {
$indexes[$index['Key_name']]['Column_name'][$index['Seq_in_index']] = $index['Column_name'];
}
unset($indexes[$key_index]);
}
$detail['index'][$table['Name']] = $indexes;
} else {
$detail['index'][$table['Name']] = [];
}
}
@mysqli_close($connection);
return $detail;
}
$errors[] = 'Fail to get detail for database:' . $database;
@mysqli_close($connection);
return false;
}
function update_db($server, $username, $password, $database, $sqls, &$errors = [])
{
$connection = @mysqli_connect($server, $username, $password);
if (false === $connection) {
$errors[] = 'Fail to connect DB server:' . $server . ':' . $username . ':' . $password . ':' . $database;
return false;
}
$serverset = 'character_set_connection=utf8, character_set_results=utf8, character_set_client=binary';
$serverset .= @mysqli_get_server_info($connection) > '5.0.1' ? ', sql_mode=\'\'' : '';
@mysqli_query($connection, "SET ${serverset}");
if (!@mysqli_select_db($connection, $database)) {
$errors[] = 'Fail to select database:' . $database;
@mysqli_close($connection);
return false;
}
$result = true;
foreach ($sqls as $sql) {
$result &= execute($connection, $sql, $errors);
}
return $result;
}
function query($connection, $sql)
{
if ($connection) {
$result = @mysqli_query($connection, $sql);
if ($result) {
$result_a = [];
while ($row = @mysqli_fetch_assoc($result)) {
$result_a[] = $row;
}
return $result_a;
}
}
return false;
}
function execute($connection, $sql, &$errors)
{
if ($connection) {
$result = @mysqli_query($connection, $sql);
if ($result) {
return true;
}
$errors[] = @mysqli_error($connection);
}
return false;
}
function build_query($diff)
{
$sqls = [];
if ($diff) {
if (isset($diff['table']['drop'])) {
foreach ($diff['table']['drop'] as $table_name => $table_detail) {
$sqls[] = "DROP TABLE `{$table_name}`";
}
}
if (isset($diff['table']['create'])) {
foreach ($diff['table']['create'] as $table_name => $table_detail) {
$fields = $diff['field']['create'][$table_name];
$sql = "CREATE TABLE `${table_name}` (";
$t = [];
$k = [];
foreach ($fields as $field) {
$t[] = "`{$field['Field']}` " . strtoupper($field['Type']) . sqlnull($field['Null']) . sqldefault($field['Default']) . sqlextra($field['Extra']) . sqlcomment($field['Comment']);
}
if (isset($diff['index']['create'][$table_name]) && !empty($diff['index']['create'][$table_name])) {
$indexs = $diff['index']['create'][$table_name];
foreach ($indexs as $index_name => $index_detail) {
if ('PRIMARY' == $index_name) {
$k[] = 'PRIMARY KEY (`' . implode('`,`', $index_detail['Column_name']) . '`)';
} else {
$k[] = (0 == $index_detail['Non_unique'] ? 'UNIQUE' : 'INDEX') . "`${index_name}`" . ' (`' . implode('`,`', $index_detail['Column_name']) . '`)';
}
}
}
list($charset) = explode('_', $table_detail['Collation']);
$sql .= implode(', ', $t) . (!empty($k) ? ',' . implode(', ', $k) : '') . ') ENGINE = ' . $table_detail['Engine'] . ' DEFAULT CHARSET = ' . $charset;
$sqls[] = $sql;
}
}
if (isset($diff['table']['change'])) {
foreach ($diff['table']['change'] as $table_name => $table_changes) {
if (!empty($table_changes)) {
$sql = "ALTER TABLE `${table_name}`";
foreach ($table_changes as $option => $value) {
if ('Collation' == $option) {
list($charset) = explode('_', $value);
$sql .= " DEFAULT CHARACTER SET ${charset} COLLATE ${value}";
} else {
$sql .= ' ' . strtoupper($option) . " = ${value} ";
}
}
$sqls[] = $sql;
}
}
}
if (isset($diff['index']['drop'])) {
foreach ($diff['index']['drop'] as $table_name => $indexs) {
foreach ($indexs as $index_name => $index_detail) {
if ('PRIMARY' == $index_name) {
$sqls[] = "ALTER TABLE `${table_name}` DROP PRIMARY KEY";
} else {
$sqls[] = "ALTER TABLE `${table_name}` DROP INDEX `${index_name}`";
}
}
}
}
if (isset($diff['field']['drop'])) {
foreach ($diff['field']['drop'] as $table_name => $fields) {
foreach ($fields as $field_name => $field_detail) {
$sqls[] = "ALTER TABLE `${table_name}` DROP `${field_name}`";
}
}
}
if (isset($diff['field']['add'])) {
foreach ($diff['field']['add'] as $table_name => $fields) {
foreach ($fields as $field_name => $field_detail) {
$sqls[] = "ALTER TABLE `${table_name}` ADD `{$field_name}` " . strtoupper($field_detail['Type']) . sqlcol($field_detail['Collation']) . sqlnull($field_detail['Null']) . sqldefault($field_detail['Default']) . sqlextra($field_detail['Extra']) . sqlcomment($field_detail['Comment']) . " AFTER `{$field_detail['After']}`";
}
}
}
if (isset($diff['index']['add'])) {
foreach ($diff['index']['add'] as $table_name => $indexs) {
foreach ($indexs as $index_name => $index_detail) {
if ('PRIMARY' == $index_name) {
$sqls[] = "ALTER TABLE `${table_name}` ADD PRIMARY KEY (`" . implode('`,`', $index_detail['Column_name']) . '`)';
} else {
$sqls[] = "ALTER TABLE `${table_name}` ADD" . (0 == $index_detail['Non_unique'] ? ' UNIQUE ' : ' INDEX ') . "`${index_name}`" . ' (`' . implode('`,`', $index_detail['Column_name']) . '`)';
}
}
}
}
if (isset($diff['field']['change'])) {
foreach ($diff['field']['change'] as $table_name => $fields) {
foreach ($fields as $field_name => $field_detail) {
$sqls[] = "ALTER TABLE `${table_name}` CHANGE `{$field_name}` `{$field_name}` " . strtoupper($field_detail['Type']) . sqlcol($field_detail['Collation']) . sqlnull($field_detail['Null']) . sqldefault($field_detail['Default']) . sqlextra($field_detail['Extra']) . sqlcomment($field_detail['Comment']);
}
}
}
}
return $sqls;
}
function sqlkey($val)
{
switch ($val) {
case 'PRI':
return ' PRIMARY';
case 'UNI':
return ' UNIQUE';
case 'MUL':
return ' INDEX';
default:
return '';
}
}
function sqlcol($val)
{
switch ($val) {
case null:
return '';
default:
list($charset) = explode('_', $val);
return ' CHARACTER SET ' . $charset . ' COLLATE ' . $val;
}
}
function sqldefault($val)
{
if (null === $val) {
return '';
}
return " DEFAULT '" . stripslashes($val) . "'";
}
function sqlnull($val)
{
switch ($val) {
case 'NO':
return ' NOT NULL';
case 'YES':
return ' NULL';
default:
return '';
}
}
function sqlextra($val)
{
switch ($val) {
case '':
return '';
default:
return ' ' . strtoupper($val);
}
}
function sqlcomment($val)
{
switch ($val) {
case '':
return '';
default:
return " COMMENT '" . stripslashes($val) . "'";
}
}