欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  php教程

php5.3下使用php管理crontab计划任务

程序员文章站 2022-05-20 15:05:44
...
php5.3或以上版本可以使用php管理crontab计划任务,下面我先来体验一下,有需要学习了解的朋友可进入参考.

1.使用php-crontab-manager管理计划任务

要求 PHP>=5.3,使用方法举例,代码如下:

use phpmanagercrontabCrontabManager; 
$crontab = new CrontabManager(); 
$crontab->enableOrUpdate('/tmp/my/crontab.txt'); 
$crontab->save();

添加一个简单的计划任务,代码如下:

use phpmanagercrontabCrontabManager; 
$crontab = new Ssh2_crontab_manager(); 
$job = $crontab->newJob(); 
$job->on('* * * * *'); 
$job->onMinute('20-30')->doJob("echo foo"); 
$crontab->add($job); 
$job->onMinute('35-40')->doJob("echo bar"); 
$crontab->add($job); 
$crontab->save();

php类文件,代码如下:

path = substr(__FILE__, 0, $path_length) . '/';
        $this->handle = 'crontab.txt';
        $this->cron_file = "{$this->path}{$this->handle}";
        try {
            if (is_null($host) || is_null($port) || is_null($username) || is_null($password)) throw new Exception("The host, port, username and password arguments must be specified!");
            $this->connection = @ssh2_connect($host, $port);
            if (!$this->connection) throw new Exception("The SSH2 connection could not be established.");
            $authentication = @ssh2_auth_password($this->connection, $username, $password);
            if (!$authentication) throw new Exception("Could not authenticate '{$username}' using pasword: '{$password}'.");
        }
        catch(Exception $e) {
            $this->error_message($e->getMessage());
        }
    }
    public function exec() {
        $argument_count = func_num_args();
        try {
            if (!$argument_count) throw new Exception("There is nothing to exececute, no arguments specified.");
            $arguments = func_get_args();
            $command_string = ($argument_count > 1) ? implode(" && ", $arguments) : $arguments[0];
            $stream = @ssh2_exec($this->connection, $command_string);
            if (!$stream) throw new Exception("Unable to execute the specified commands: 
{$command_string}"); } catch(Exception $e) { $this->error_message($e->getMessage()); } return $this; } public function write_to_file($path = NULL, $handle = NULL) { if (!$this->crontab_file_exists()) { $this->handle = (is_null($handle)) ? $this->handle : $handle; $this->path = (is_null($path)) ? $this->path : $path; $this->cron_file = "{$this->path}{$this->handle}"; $init_cron = "crontab -l > {$this->cron_file} && [ -f {$this->cron_file} ] || > {$this->cron_file}"; $this->exec($init_cron); } return $this; } public function remove_file() { if ($this->crontab_file_exists()) $this->exec("rm {$this->cron_file}"); return $this; } public function append_cronjob($cron_jobs = NULL) { if (is_null($cron_jobs)) $this->error_message("Nothing to append! Please specify a cron job or an array of cron jobs."); $append_cronfile = "echo '"; $append_cronfile.= (is_array($cron_jobs)) ? implode("n", $cron_jobs) : $cron_jobs; $append_cronfile.= "' >> {$this->cron_file}"; $install_cron = "crontab {$this->cron_file}"; $this->write_to_file()->exec($append_cronfile, $install_cron)->remove_file(); return $this; } public function remove_cronjob($cron_jobs = NULL) { if (is_null($cron_jobs)) $this->error_message("Nothing to remove! Please specify a cron job or an array of cron jobs."); $this->write_to_file(); $cron_array = file($this->cron_file, FILE_IGNORE_NEW_LINES); if (emptyempty($cron_array)) { $this->remove_file()->error_message("Nothing to remove! The cronTab is already empty."); } $original_count = count($cron_array); if (is_array($cron_jobs)) { foreach ($cron_jobs as $cron_regex) $cron_array = preg_grep($cron_regex, $cron_array, PREG_GREP_INVERT); } else { $cron_array = preg_grep($cron_jobs, $cron_array, PREG_GREP_INVERT); } return ($original_count === count($cron_array)) ? $this->remove_file() : $this->remove_crontab()->append_cronjob($cron_array); } public function remove_crontab() { $this->remove_file()->exec("crontab -r"); return $this; } private function crontab_file_exists() { //开源代码phprm.com return file_exists($this->cron_file); } private function error_message($error) { die("
ERROR: {$error}
"); } } ?>

项目地址:https://github.com/MediovskiTechnology/php-crontab-manager

2.Ssh2_crontab_manager 关于php管理计划任务的详细教程

具体内容参考:http://net.tutsplus.com/tutorials/php/managing-cron-jobs-with-php-2/

参考资料:http://*.com/questions/4421020/use-php-to-create-edit-and-delete-crontab-jobs