130 lines
3.2 KiB
PHP
130 lines
3.2 KiB
PHP
<?php
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namespace Shikiryu\Backup\Backup;
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use PDO;
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class Mysql extends BackupAbstract
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{
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use IsLocalTrait;
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/**
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* @var $pdo PDO
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*/
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private $pdo;
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/*
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* from config
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*/
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protected $tables;
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protected $host;
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protected $database;
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protected $login;
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protected $pwd;
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/**
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* @param array $config
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*/
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public function __construct(array $config = [])
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{
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parent::__construct($config);
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}
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/**
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* @param array $tables
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* @return $this|string
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*/
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private function fromTables($tables = [])
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{
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if (!empty($tables)) {
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$this->tables = $tables;
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}
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$this->streams_to_backup[sprintf('db-%s.sql', $this->database)] = $this->getFromTables();
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return $this;
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}
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/**
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* set the list of table to backup to all tables
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*
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* @return $this
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*/
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private function everything()
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{
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$this->tables = array();
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foreach ($this->pdo->query('SHOW TABLES') as $table) {
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$this->tables[] = $table;
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}
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$this->streams_to_backup[sprintf('db-%s.sql', $this->database)] = $this->getFromTables();
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return $this;
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}
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/**
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* @return string
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*/
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private function getFromTables()
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{
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$return = '';
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foreach ($this->tables as $table) {
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if (is_array($table)) {
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$table = $table[0];
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}
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$result = $this->pdo->query('SELECT * FROM ' . $table);
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$num_fields = $result->columnCount();
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$return .= 'DROP TABLE IF EXISTS ' . $table . ';';
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$result2 = $this->pdo->query('SHOW CREATE TABLE ' . $table);
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$row2 = $result2->fetch();
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$return.= "\n\n" . $row2[1] . ";\n\n";
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foreach ($result as $row) {
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$return.= 'INSERT INTO ' . $table . ' VALUES(';
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for ($j = 0; $j < $num_fields; $j++) {
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$row[$j] = addslashes($row[$j]);
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// $row[$j] = preg_replace("\n", "\\n", $row[$j]);
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if (isset($row[$j])) {
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$return.= '"' . $row[$j] . '"';
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} else {
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$return.= '""';
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}
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if ($j < ($num_fields - 1)) {
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$return.= ',';
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}
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}
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$return.= ");\n";
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}
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$return.="\n\n\n";
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}
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return $return;
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}
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/**
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* @return bool
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*/
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public function isValid()
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{
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return !empty($this->streams_to_backup);
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}
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/**
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* Function that can be used to initialize the backup
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*/
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protected function preBuild()
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{
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$this->pdo = new PDO('mysql:host='.$this->host.';dbname='.$this->database, $this->login, $this->pwd);
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}
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/**
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* Function that can be used after the backup
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*/
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protected function postBuild()
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{
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// TODO: Implement postBuild() method.
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}
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/**
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* Mandatory function doing the backup
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*/
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protected function build()
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{
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empty($this->tables) || $this->tables === '*' ? $this->everything() : $this->fromTables($this->tables);
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}
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}
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