导出mysql数据库table

mysqldump -u username -p database_name table_name > export_file.sql

<?php
$host = 'localhost';
$username = 'username';
$password = 'password';
$database = 'database_name';
$table = 'table_name';

$connection = new mysqli($host, $username, $password, $database);

if ($connection->connect_error) {
    die("Connection failed: " . $connection->connect_error);
}

$sql = "SELECT * INTO OUTFILE '/path/to/export_file.csv' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '\"' LINES TERMINATED BY '\n' FROM $table";

if ($connection->query($sql) === TRUE) {
    echo "Table exported successfully";
} else {
    echo "Error exporting table: " . $connection->error;
}

$connection->close();
?>

GRANT SELECT, LOCK TABLES ON database_name.* TO 'username'@'localhost';
FLUSH PRIVILEGES;

chmod 755 /path/to/export_directory
chown mysql:mysql /path/to/export_directory

mysqldump --default-character-set=utf8 -u username -p database_name table_name > export_file.sql