Explode function not working properly

Hi everyone,

I have written the following function that converts from 12-hour time to 24-hour time. It is not the best way to do it but since I had to add the 24-hour time to a system that was previously built with 12-hour time I came up with this:

function get_m_time($AppntmntTime){
	$Ntime = explode(":",$AppntmntTime);
	if($Ntime[1] = "00am"){
		$mtime = $Ntime[0];
	} else {
		$mtime = $Ntime[0]+12;
	}
	die($AppntmntTime."<br/>".$Ntime[1]."<br/>".$mtime);
	return $mtime;
}

PHP:

Note that the die function is just in there temporarily while I am trying to debug it. When I pass in a time that has 'pm' in it for example 1:00pm I get the following output from the die function.
1:00pm (AppntmntTime)
00am (Ntime[1])
1 (mtime)

However the 2nd line there should be 00ppm and the last line should be 13. Any idea why the explode function is doing that?

Thanks for any help in advance, I really appreciate it.

 

I'm not to sure either I'm just a novice but it looks fine to me...

 

I just figured it out, the if statment had = instead of == so it was assigning the $Ntime[1] element to be "00am".