Question

$query = mysql_query("SELECT * FROM joblist WHERE salary LIKE '%$searchq%' OR jobtitle LIKE '%$searchq%'");
$count = mysql_num_rows($query);
if ($count == 0){
    $output = 'There was no search results!';
}else {
    while($row = mysql_fetch_array($query)) {
        $salary = $row['$salary'];
        $jobtitle = $row['$jobtitle'];
        $id = $row['id'];
        $output .= '<div>' .$salary.' '.$jobtitle.'</div>';
    }
}

致命错误：

Call to undefined function mysql_query() in /srv/http/head.php on line 16

Answer 1

如果您使用的是PHP 7，则可以使用mysqli_ *。因为此版本中没有mysql_ *。以下是您可以使用它的示例。

<?php

// procedural style of mysqli

$host = "host";
$user = "user";
$password = "password";
$database = "db";

$link = mysqli_connect($host, $user, $password, $database);

if(!$link){
    echo ('unable to connect to database');
}
else {
$sql = "your select query";
$result = mysqli_query($link,$sql);
    if(mysqli_num_rows($result) == 1){
  // SUCCESS STUFF
}
else {
 // error stuff
}
} // end else

?>

Answer 2

Mysql_ *从PHP 7.0起已弃用。请使用mysqli_ *。否则，将您的PHP版本降级到5.6或更低版本。它将正常工作。 https://www.php.net/manual/en/function.mysql-connect.php（请参阅本页的衰落部分）。

Answer 3

系统上未安装/配置mysql的PHP扩展。

尝试

Your PHP installation appears to be missing the MySQL extension which is required by WordPress以确保模块实际已启用
在Linux上安装Ubuntu http://www.cyberciti.biz/faq/install-mysql-php-support-for-wordpress/
Windows PHP doesn't see mysql extension

这就是说，你应该使用 mysqli （不是 mysql ）扩展名，因为 mysql 已被弃用，不推荐使用，并且不在PHP7。

mysql_query未按预期工作

3 个答案: