为什么$sql = "insert into user(name, age, class) values('$name', '$age', '$class')";values()里面的变量还要加引号???
因为那是MySQL语法,插入数据字符类型要加引号,数字不用
MySQL基础不过关的同学需要加强啊
因为那是MySQL语法,插入数据字符类型要加引号,数字不用
MySQL基础不过关的同学需要加强啊
2016-12-28
$mysqli = new mysqli('127.0.0.1','root','');
$mysqli->select_db();
$mysqli->connect_errno();
$mysqli->connect_error();
$mysqli->query();
$mysqli->error();
$mysqli->close();
$mysqli->select_db();
$mysqli->connect_errno();
$mysqli->connect_error();
$mysqli->query();
$mysqli->error();
$mysqli->close();
2016-12-26
如果要对照mysqli可以看看文档http://php.net/manual/zh/book.mysqli.php,虽然也是新手
2016-12-26
mysqli
$link1 = new mysqli('127.0.0.1','root','');
$link1->select_db('phpformysql');
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}else{
print("Connect success\n");
}
$link1->close();
$link1 = new mysqli('127.0.0.1','root','');
$link1->select_db('phpformysql');
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}else{
print("Connect success\n");
}
$link1->close();
2016-12-26