php to send email every 10 mins

[vlowe]

Im still trying to work this one out but what i would like to do is send an email if an alert is present. but not resend the email on every page refresh where the alert is still present.

 

so i was thinking of using something like $_SESSION['sent_time'] to record when the last email was sent and only send another email if the current time is greater than 10 mins from the $_SESSION['sent_time'].

 

How can i record the time into the session variable in a format which i can use to compare with the current time?

and how will i compare?

 

cheers for any suggestions

[JKG]

for how long? for ever?

 

cron job?

 

would put quite a strain on the server...

[voip03]

<?php

echo 'Current time: '.date('h:i:s').'<br>'; //current time
echo 'In 10 Minutes:'.date('h:i:s',strtotime('+10 minutes')); //future time
?>

[skwap]

you can use cron job to do scheduled process. Just make a a page & write the code to send a email after set up a cron job command.

[vlowe]

the email will only be sent while an alert exists.

 

so if i did something like

if((SENDEMAIL == "TRUE") && ($ALERT)) {
send_email();
} 

 

that will send an email if SENDEMAIL is set to true and an alert is present.

 

so i will then need to record the time the email was sent

$_SESSION['sent_time'] = date('h:i:s');

 

and add to IF somehow to check?

if((SENDEMAIL == "TRUE") && ($ALERT) && ($_SESSION['sent_time'] > 10 minutes ago!)) {
send_email();
} 

LOL how can i check if $_SESSION['sent_time'] is greater than 10 mins ago?

 

 

[voip03]

add this code when you send the mail 1st time

$_SESSION['sent_time'] =date('h:i:s');

 

For checking

$currentTime = date('h:i:s');
if( $currentTime > $_SESSION['sent_time'] )
{ echo "'Send New mail'";	}
else{echo "Wait for 10 minutes";	}

[vlowe]

cheers voip03

 

but isnt currenttime always going to be > session sent time?

 

i need to compare the time differance between current time and session sent time, then check if the differance is greater than 10 mins..

[vlowe]

i think i have it

    <? session_start();
    $sendAfter = (10)*(60); // in seconds
    $sendEmail = false;
    $now = date('Y-m-d H:i:s');
     
    if(!isset($_SESSION['sent_time'])) // if you are first time send email
    {
    $sendMail = true;
    $_SESSION['sent_time'] = $now;
    }
    else
    {
    $diff = strtotime($now) - strtotime($_SESSION['sent_time']);
    if($diff >= $sendAfter)// if difference is more than 10 min then only send mail
    {
    $sendMail = true;
    $_SESSION['sent_time'] = $now;
    }
    }
     
    if($sendMail)
    echo "mail sending code here";
    else
    echo "nothing to do";
     
    ?>