这是一个我为您编写的PHP脚本。它获取所有数据库列表并在数据库名称以
user
开头时应用更新。
我还让它在应用更改之前备份每个数据库。备份部分目前仅适用于Linux / Unix,但可以进行调整以适用于其他操作系统。
目前它非常冗长,因此您可以根据需要进行更改。您还可以更改行终止符,具体取决于您将从CLI还是浏览器运行它。我建议将其放在您的脚本目录中,并从CLI运行它。
如果您需要其他帮助,或者如果这不适用于您,请告诉我。
<?php
// Configure these as needed
$db_host = 'localhost';
$db_user = 'user';
$db_pass = 'password';
$datetime_pattern = date('Ymd.His');
$backup_file_path = "/path/to/db_backups/$datetime_pattern/";
$backup_file_format = "db_backup.%s.sql";
$backup_syntax_pattern = "/usr/bin/mysqldump --host=%s --user=%s --password=%s --opt %s > $backup_file_path/db_backup.%s.sql";
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!
// CHANGE THE PERMISSIONS!!!!!!
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!
$backup_file_permission = 0777;
// Choose how to terminate your lines
$line_end = "\n"; // Use for CLI
//$line_end = "<br/>"; // Use for browser
// Match words that begin with 'user', case-insensitive
$pattern = '/^user/i';
// What changes will we be applying?
$db_update_syntax = array("ALTER TABLE foo ADD baz1 VARCHAR(30) AFTER bar1",
"ALTER TABLE foo ADD baz2 VARCHAR(30) AFTER bar2",
"ALTER TABLE foo ADD baz3 VARCHAR(30) AFTER bar3",
);
// END OF CONFIGURATION
/////////////////////////////////////////////////////////////
// Create the database backup directory
if (!mkdir($backup_file_path, $backup_file_permission, true)) {
die('Failed to create backup directory...');
}
// Connecting to MySQL.
$conn = @mysql_connect($db_host, $db_user, $db_pass)
or die('Not connected : ' . mysql_errno() . ': ' . mysql_error());
$db_list = mysql_list_dbs($conn);
echo "{$line_end}Starting Database Update.{$line_end}";
while ($row = mysql_fetch_assoc($db_list)) {
$db_name = $row['Database'];
if (preg_match($pattern, $db_name)) {
echo "{$line_end}A match was found: [$db_name]{$line_end}";
echo "Backing up the database{$line_end}";
// Backup the database
$backup_syntax = sprintf($backup_syntax_pattern, $db_host, $db_user, $db_pass, $db_name, $db_name);
exec($backup_syntax);
$db_selected = mysql_select_db($db_name, $conn)
or die("Can't use [$db_name] : " . mysql_error());
foreach ($db_update_syntax as $each_update_syntax) {
echo "Altering using: [$alter_syntax]{$line_end}";
$update_status = mysql_query($alter_syntax);
if ($update_status) {
echo "Success!{$line_end}{$line_end}";
} else {
echo "Unable to update [$db_name] : " . mysql_error() . "{$line_end}{$line_end}";
}
}
} else {
echo "Ignoring: [$db_name]{$line_end}";
}
}
echo "Finished!{$line_end}";
// Free resources / Close MySQL Connection
mysql_free_result($db_list);
mysql_close($conn);