将php文件放在Linux的后台 [英] Put php file in the background on Linux

问题描述

我有一个PHP文件，用于检查MySQL数据库中的字段是否为空. 如果该字段为空，则PHP为更新. 我想在Linux上的背景中为该文件上色. 如果用户创建记录，则后台的PHP文件将被更新. 我的PHP代码:

I have a PHP file that checks if a field in MySQL database is empty. If the field is empty, PHP is an update. I want to color this file in the background on Linux. If a user creates a record, the PHP file in the background will be updated. My PHP code:

<?php
$mysqli = mysqli_connect("localhost","name","pass","database");
$query = 'UPDATE  users SET  permissions =  "content" WHERE permissions = ""';
$n = $mysqli->query($query);
$query = "SELECT * from users";
$result = $mysqli->query($query);
$row = $result->fetch_array(MYSQLI_ASSOC);
$subdominio = $row["name"];
$created_at = $row["created_at"];
?>

我该怎么做? 我可以在Linux的后台使用文件PHP遇到问题吗?性能，速度变慢等等?

How can I do this? I can have problem with it file PHP in the background on Linux? Performance, slow down and etc?

非常感谢！

推荐答案

1. 创建PHP文件并将您的代码放在此处. (例如 myfile.php )
2. 安装"screen":

1. Create PHP file and put your code there. (For example myfile.php)
2. Install 'screen' :

Ubuntu& Debian:apt-get -y install screen

Ubuntu & Debian: apt-get -y install screen

CentOS和Fedora:yum -y install screen

CentOS & Fedora: yum -y install screen

****遵循步骤3& 4一直执行myfile.php.并按照步骤5& 6使用crontab每1分钟或每X次执行myfile.php. ****

**** Follow steps 3 & 4 to execute myfile.php all the time. And follow steps 5 & 6 to execute myfile.php every 1 minute or every X time using crontab. ****

1. 输入'screen'.

2. 键入'php myfile.php'. 并按Ctrl + A + D最小化/隐藏它. 然后输入'screen -r'.

1. Type ' screen ' .

2. Type ' php myfile.php ' . And minimize/hide it by pressing Ctrl + A + D. And get back to it by typing ' screen -r ' .

键入'crontab -e'.

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