Create CronJobs using PHP

[Aerosol]

Permissions for www-data user

www-data ALL=(ALL) NOPASSWD: /usr/bin/crontab, /bin/mv, /bin/sh, /bin/cp,  /bin/rm, /usr/bin/php

function createCronJob($min,$hour,$dayofMonth,$month,$dayOfweek,$command,$commented)
{
	$realpath_var = realpath(__FILE__);
	$realpath_arr = explode('/',$realpath_var);
	$FullPathRoot = "/".$realpath_arr[1]."/".$realpath_arr[2]."/".$realpath_arr[3];

	if($commented!="")
	{
		$commented="#";
	}

	if($min=="")
	{
		$min="*";
	}
	if($hour=="")
	{
		$hour="*";
	}
	if($dayofMonth=="")
	{
		$dayofMonth="*";
	}
	if($month=="")
	{
		$month="*";
	}
	if($dayOfweek=="")
	{
		$dayOfweek="*";
	}

	$CronJobs = shell_exec("sudo crontab -l");



		$CronJobs_arr= explode("#***\n",$CronJobs) or die("ERROR");
		$CronJobs_arr = array_filter($CronJobs_arr);


		$NewCron = $CronJobs_arr[0]."#***\n";


	if($command!="")
	{
		$command_file = "#!/bin/bash\n";
		$command_file.= $command."\n\n";
		$command_file.= 'echo '.'"Scheduled Backup: Backup performed at '.'`date '."'+%d-%m-%Y %H:%M:%S'`".'\n<br/>---------------------------------------------------------------------------------\n" >> '.$FullPathRoot."/logSchedule/".date("Y-m-d").".log" ;

		file_put_contents($FullPathRoot."/bash/ExecCron.sh",$command_file);
		$NewCron.= $commented.$min." ".$hour." ".$dayofMonth." ".$month." ".$dayOfweek."\t".$FullPathRoot."/bash/ExecCron.sh"."\r\n#***\n";

	}




	$file = $FullPathRoot."/InstallNewCron.txt";
	file_put_contents($file,$NewCron);

	$ClearCronJob = shell_exec("sudo crontab -r");
	$reinstall_cronJob = shell_exec("sudo crontab ".$file);
	unlink($file);

	$Body="The Original Cronjob was changed \n\n\nOriginal:\n\n****************\n\n".$CronJobs."\n****************\n\n\nModfied To:\n\n".$NewCron."\n\n";
	return $Body

}