mysql_query不返回数据

Question

该表Users包含数据但仍显示Records Not Found

<?php

$conn = mysql_connect("localhost", "root", "pass", "Assign1");
$records = mysql_query($conn, "select * from Users");

if(!$records)
{
    echo "No Records Found";
    exit();
}

while($row = mysql_fetch_array($records))
{
    echo $row['name'] . " " . $row['pwd'];
    echo "<br />";
}

mysql_close($conn);

?>

Answer 1

你有mysql_query相反的参数.它应该是:

$records = mysql_query("select * from Users", $conn);

你的另一个问题是if声明.您正在检查if查询,而不是结果集.

此外,我相信您可能知道但是mysql库已被弃用并且正在删除.您应该学会使用mysqli函数,因为它们将来会对您有用.

链接到MySQLi文档 - 它实际上并不比mysql库更难.

要在正确的库中重新实现:

<?php

$mysqli = new mysqli("localhost", "user", "pass", "database");
$query = $mysqli->query("SELECT * FROM users");
$results = $query->fetch_assoc();

if($results) {
    foreach($results as $row) {
        echo $row['name'] . " " . $row['pwd'] . "<br/>";
    }
} else {
    echo "No results found.";
}

?>

希望我不只是为你完成你的整个任务,但是让一个人正确地使用mysqli可能是值得的.