我是Laravel的新手。我一直在尝试创建一个以backup_date_.sql格式备份表的控制器，而根本不使用任何第三方库，但是我对此感到沮丧。我进行了搜索，发现了一些代码示例。我试图在我的BackupsController中使用它们，但是事情变得越来越困难。任何帮助都非常感谢。这是我的代码，谢谢。
<?php
public function query($data, $mode = \PDO::FETCH_ASSOC)
{
$pdo = DB::connection()->getPdo();
$stmt = $pdo->query($data);
$results = $stmt->fetchAll($mode);
// $results = $stmt->fetch($mode);
return $results;
}
public function backup(Request $request)
{
if ($request->all()) {
$output = '';
foreach (request('table') as $table) {
$show_table_query = $this->query("SHOW CREATE TABLE " . stripslashes($table) . "");
foreach ($show_table_query as $show_table_row)
{
array_shift($show_table_row);
$output .= implode(", ", $show_table_row);
}
$single_result = DB::select('select * from ' . stripslashes($table));
foreach ($single_result as $key => $value)
{
$value = array_map(function($obj) {
return (array) $obj;
}, $single_result);
$keys = array_keys($value[$key]);
$val = array_values($value[$key]);
$get_keys = array_shift($keys);
$get_values = array_shift($val);
$table_column = implode(",", $keys);
// $table_value ="'" . implode("','", $val) . "'\n";
$table_value ="'" . implode("','", $val) . "'";
$output .= DB::insert(
"INSERT INTO " . stripslashes($table) . "("
. $table_column . ") VALUES(" . $table_value . ")"
);
}
}
?>
答案 0 :(得分：0)
这是我发现的功能，后来被修改以导出数据库，包括所有数据以及存储过程和函数（如果数据库中存在）。该代码是为Codeigniter应用程序编写的，但是您可以轻松地将其转换为laravel。
Codeigniter版本：
<?php
if(!function_exists("export_database")){
function export_database($bkpFileName = null){
$ci =& get_instance();
$targetTables = [];
$newLine = "\r\n";
$queryTables = $ci->db->query('SHOW TABLES');
foreach($queryTables->result() as $table){
$targetTables[] = $table->Tables_in_my_db;
}
foreach($targetTables as $table){
$tableData = $ci->db->query('SELECT * FROM '.$table);
$res = $ci->db->query('SHOW CREATE TABLE '.$table);
$cnt = 0;
$content = (!isset($content) ? '' : $content) . $res->row_array()["Create Table"].";" . $newLine . $newLine;
foreach($tableData->result_array() as $row){
$subContent = "";
$firstQueryPart = "";
if($cnt == 0 || $cnt % 100 == 0){
$firstQueryPart .= "INSERT INTO {$table} VALUES ";
if($tableData->num_rows() > 1)
$firstQueryPart .= $newLine;
}
$valuesQuery = "(";
foreach($row as $key => $value){
$valuesQuery .= $ci->db->escape($value) . ", ";
}
$subContent = $firstQueryPart . rtrim($valuesQuery, ", ") . ")";
if( (($cnt+1) % 100 == 0 && $cnt != 0) || $cnt+1 == $tableData->num_rows())
$subContent .= ";" . $newLine;
else
$subContent .= ",";
$content .= $subContent;
$cnt++;
}
$content .= $newLine;
}
$content = trim($content);
//check for stored procedures
$storedProcedures = $ci->db->query("SHOW PROCEDURE STATUS WHERE Db = '{$ci->db->database}'");
if($storedProcedures->num_rows() > 0){
foreach($storedProcedures->result() as $procedure){
$data = $ci->db->query("SHOW CREATE PROCEDURE {$procedure->Name}");
if($data->num_rows() > 0){
$dropProcedureSQL = "DROP PROCEDURE IF EXISTS {$procedure->Name};";
$sqlQuery = $data->row_array()["Create Procedure"];
$sqlQuery = preg_replace("/CREATE DEFINER=.+? PROCEDURE/", "CREATE PROCEDURE IF NOT EXISTS", $sqlQuery);
$sqlQuery = "\r\n" . $sqlQuery . "//";
$content .= $newLine . $newLine . $dropProcedureSQL . $sqlQuery ;
}
}
}
//check for functions
$functions = $ci->db->query("SHOW FUNCTION STATUS WHERE Db = '{$ci->db->database}';");
if($functions->num_rows() > 0){
foreach($functions->result() as $function){
$data = $ci->db->query("SHOW CREATE FUNCTION {$function->Name}");
if($data->num_rows() > 0){
$dropFunctionSQL = "DROP function IF EXISTS {$function->Name};";
$sqlQuery = $data->row_array()["Create Function"];
$sqlQuery = preg_replace("/CREATE DEFINER=.+? FUNCTION/", "CREATE FUNCTION IF NOT EXISTS", $sqlQuery);
$sqlQuery = "\r\n" . $sqlQuery . "//";
$content .= $newLine . $newLine . $dropFunctionSQL . $sqlQuery ;
}
}
}
$dbBackupFile = FCPATH . BKP_FILE_DIR;
if(is_null($bkpFileName))
$dbBackupFile .= "{$ci->db->database}.sql";
else
$dbBackupFile .= "{$bkpFileName}.sql";
$handle = fopen($dbBackupFile, "w+");
fwrite($handle, $content);
fclose($handle);
return $dbBackupFile;
}
}
Laravel版本：
<?php
if(!function_exists("export_database")){
function export_database($bkpFileName = null){
$ci =& get_instance();
$targetTables = [];
$newLine = "\r\n";
$queryTables = DB::select(DB::raw('SHOW TABLES');
foreach($queryTables->result() as $table){
$targetTables[] = $table->Tables_in_my_database;
}
foreach($targetTables as $table){
$tableData = DB::select(DB::raw('SELECT * FROM '.$table);
$res = DB::select(DB::raw('SHOW CREATE TABLE '.$table);
$cnt = 0;
$content = (!isset($content) ? '' : $content) . $res->row_array()["Create Table"].";" . $newLine . $newLine;
foreach($tableData as $row){
$subContent = "";
$firstQueryPart = "";
if($cnt == 0 || $cnt % 100 == 0){
$firstQueryPart .= "INSERT INTO {$table} VALUES ";
if($tableData->count() > 1)
$firstQueryPart .= $newLine;
}
$valuesQuery = "(";
foreach($row as $key => $value){
$valuesQuery .= $ci->db->escape($value) . ", ";
}
$subContent = $firstQueryPart . rtrim($valuesQuery, ", ") . ")";
if( (($cnt+1) % 100 == 0 && $cnt != 0) || $cnt+1 == $tableData->count())
$subContent .= ";" . $newLine;
else
$subContent .= ",";
$content .= $subContent;
$cnt++;
}
$content .= $newLine;
}
$content = trim($content);
//check for stored procedures
$storedProcedures = DB::select(DB::raw("SHOW PROCEDURE STATUS WHERE Db = '{$ci->db->database}'");
if($storedProcedures->count() > 0){
foreach($storedProcedures->result() as $procedure){
$data = DB::select(DB::raw("SHOW CREATE PROCEDURE {$procedure->Name}");
if($data->count() > 0){
$dropProcedureSQL = "DROP PROCEDURE IF EXISTS {$procedure->Name};";
$sqlQuery = $data->row_array()["Create Procedure"];
$sqlQuery = preg_replace("/CREATE DEFINER=.+? PROCEDURE/", "CREATE PROCEDURE IF NOT EXISTS", $sqlQuery);
$sqlQuery = "\r\n" . $sqlQuery . "//";
$content .= $newLine . $newLine . $dropProcedureSQL . $sqlQuery ;
}
}
}
//check for functions
$functions = DB::select(DB::raw("SHOW FUNCTION STATUS WHERE Db = '{$ci->db->database}';");
if($functions->count() > 0){
foreach($functions->result() as $function){
$data = DB::select(DB::raw("SHOW CREATE FUNCTION {$function->Name}");
if($data->count() > 0){
$dropFunctionSQL = "DROP function IF EXISTS {$function->Name};";
$sqlQuery = $data->row_array()["Create Function"];
$sqlQuery = preg_replace("/CREATE DEFINER=.+? FUNCTION/", "CREATE FUNCTION IF NOT EXISTS", $sqlQuery);
$sqlQuery = "\r\n" . $sqlQuery . "//";
$content .= $newLine . $newLine . $dropFunctionSQL . $sqlQuery ;
}
}
}
/*$dbBackupFile = FCPATH . BKP_FILE_DIR;
if(is_null($bkpFileName))
$dbBackupFile .= "{$ci->db->database}.sql";
else
$dbBackupFile .= "{$bkpFileName}.sql";
$handle = fopen($dbBackupFile, "w+");
fwrite($handle, $content);
fclose($handle);*/
return $content;
}
}
注意： 我已尽力将上述代码从codeigniter转换为laravel。但是由于我没有正在运行的laravel实例来对其进行测试，所以我不确定它是否可以工作
答案 1 :(得分：0)
写一个
命令https://laravel.com/docs/5.6/artisan#writing-commands
使用SSH mysqldump -uUSERNAME -p DATABASE > backup.sql和
时间表https://laravel.com/docs/5.6/scheduling和
完成：））