Mysql database timestamp query using php - php

Question

Mysql database timestamp query using php
I inserted into database a timestamp value set to 3 hours a head as follows
//For 3 hours ahead of time
$reciever_time = date("Y-m-d H:i:s", strtotime('+3 hours'));
now once its upto 3 hours, i need to echo "3 hours is due" but the code below keeps echoing "its not yet 3 hours" even though
3 hours is due. any help
<?php
$link = mysqli_connect("localhost", "sectona", "secBBN", "sectonadb");
$q = "SELECT id,reciever_time FROM indextime WHERE id='10'";
$qu = mysqli_query($link, $q);
while($row=mysqli_fetch_array($qu, MYSQL_ASSOC)){
$id = $row['id'];
$timest = $row['reciever_time'];
}
//60secx10min is 600milisec
//60secx30min is 1800
// 30 min = 1800
// 1 hour = 1800 x2
//12 hour = 3600 x12
//1 day = 3600 x24
$time = strtotime($timest);
$curtime = time();
// execute data that is due in 3 hours
if(($curtime-$time) >= 10800) {
print "3 hours is due then update";
}
else{
print "its not yet 3 hours";
}
?>

Answer 1

Try this:
if(($time - $curtime) >= -10800) {
print "3 hours is due then update";
} else {
print "its not yet 3 hours";
}
Only convert the 10800 to negative.

Answer 2

You can try:
$link = mysqli_connect("host","user","password","DBname");
$q = "SELECT id,reciever_time FROM indextime WHERE id='10' LIMIT 1";
$qu = $link->query($q);
$row = mysqli_fetch_object($qu);
$id = $row->id;
$timest = $row->reciever_time;
$time = strtotime($timest);
$curtime = time();
$message = ($curtime - $time) >= 10800 ? "3 hours is due then update" : "its not yet 3 hours";
print $message;

Answer 3

in PHP you want to use the the date_diff function to get the difference in time
try:
if(date_diff($time,$curtime) >= 10800){