<?php
namespace DB;
final class MySQLi {
private $connection;
private $connected;
public function __construct($hostname, $username, $password, $database, $port = '3306') {
try {
mysqli_report(MYSQLI_REPORT_STRICT);
// 实例化
$this->connection = @new \mysqli($hostname, $username, $password, $database, $port);
} catch (\mysqli_sql_exception $e) {
throw new \Exception('Error: Could not make a database link using ' . $username . '@' . $hostname . '!');
}
$this->connection->set_charset("utf8");
$this->connection->query("SET SQL_MODE = ''");
}
// 查询
public function query($sql) {
$query = $this->connection->query($sql);
if (!$this->connection->errno) {
if ($query instanceof \mysqli_result) {
$data = array();
while ($row = $query->fetch_assoc()) {
$data[] = $row;
}
$result = new \stdClass();
$result->num_rows = $query->num_rows;
$result->row = isset($data[0]) ? $data[0] : array();
$result->rows = $data;
$query->close();
return $result;
} else {
return true;
}
} else {
throw new \Exception('Error: ' . $this->connection->error . '<br />Error No: ' . $this->connection->errno . '<br />' . $sql);
}
}
// 过滤
public function escape($value) {
return $this->connection->real_escape_string($value);
}
// 受影响行数
public function countAffected() {
return $this->connection->affected_rows;
}
// 插入最后一行记录的id
public function getLastId() {
return $this->connection->insert_id;
}
// 判断是否已经连接
public function isConnected() {
return $this->connection->ping();
}
// 关闭连接
public function __destruct() {
if (!$this->connection) {
$this->connection->close();
}
}
}
【opencart3源码分析】mysqli类mysqli.php
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转载自blog.csdn.net/qq2942713658/article/details/81434337
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