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After spending the last 45 minutes looking around for a solution, I can't seem to find an easy solution to creating a countdown timer using PHP and jQuery. Most already built scripts I've found are based purely on jQuery which require a ton of code, and more parameters then they should, plus, adaptability is pretty hard.
Here's my situation;
PHP:
$countdown = date("h:i:s"); // This isn't my actual $countdown variable, just a placeholder
jQuery:
$(document).ready(function name() {
$("#this").load( function() {
setTimeout("name()", 1000)
}
}
});
HTML:
<div id="this"><?php echo($countdown); ?></div>
My idea is that, every second, #this is reloaded, giving a new value to it's contents, and as $countdown isn't a static variable, a new value will be loaded each time. This removes the need to deal with sessions (as a basic javascript countdown timer would reset on pageload, etc).
I would've though this would have worked, until I realized that the event binder .load() doesn't reload #this (I know silly me), so I guess what I'm wondering is - is there an event binder I can use to make this work or is there a way to get the functionality I'm looking for, without using a jQuery plugin (which doesn't match exactly what I want anyway)?
497
You should use Keith Wood's countdown timer: http://keith-wood.name/countdown.html
It is extremely easy to use.
All you have to do is
$('#timer').countdown({
until: '<?php echo date("h:i:s"); ?>' // change this, obviously
});
Here's the fiddle: http://jsfiddle.net/tqyj4/289/
95
OK, I know that an id is not a variable, but don't use this as an ID. It is makes people cringe.
To the rest, don't reload the value, set a value in JS in PHP and then count down.
// place this in the <head> above the code below
echo "var t = " . time() . ";";
echo "var ft = " . /* your final time here */ . ";";
Then:
// this is a helper function.
function lpad( input, len, padstr )
{
if( !padstr ) padstr = " "; // this is the normal default for pad.
var ret = String( input );
var dlen = ret.length - len;
if( dlen > 0 ) return ret;
for( var i = 0; i < dlen; i++ ) ret = padstr + ret;
return ret;
}
$(document).ready(function name() {
$("#timer").load( function() { // I changed the id
$timer = $("timer"); // might as well cache it.
// interval, not timeout. interval repeats
var intval = setInterval(function(){
t += 500; // decrease the difference in time
if( t >= ft )
{
t = ft; // prevent negative time.
clearInterval( intval ) // cleanup when done.
}
var dt = new Date(ft - t);
$timer.innerHTML = dt.getHours() + ":" +
// pad to make sure it is always 2 digits
lpad( dt.getMinutes(), 2, '0' ) + ":" +
lpad( dt.getSeconds(), 2, '0' );
}, 500) // increments of .5 seconds are more accurate
}
}
});
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