Code Examples -> Simple graphic clock/watch generation using gd library.

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PHP Code Examples

Title :	Simple graphic clock/watch generation using gd library.
Categories :	Graphics, Date Time, PHP	Christophe Lauer
Date :	May 05th 1999
Grade :	3 of 5 (graded 8 times)
Viewed :	15052
File :	AnalogClock.php3
Images :	No Images for this code example.

Search :	More code by Christophe Lauer
Action :	Grade This Code Example
Tools :	My Examples List

Code

<?php

// AnalogClock :
// This small PHP3 script has been written by Christophe Lauer
// (mailto:clauer@citeweb.net) to serve as an example for libgd.
//
// Feel free to use it as you like, you're even allowed to say
// it's your's if you like... Mail me if you like it, or if you
// can write it shorter. Comments are welcome ;-) This is emailware
//

function draw_radius($img, $x, $y, $r, $ang, $col)
{
$x1 = $x + $r * cos($ang);
$y1 = $y + $r * sin($ang);

ImageLine($img, $x, $y, $x1, $y1, $col);
}

dl('php3_gd.dll');
// Win32 users should replace prev line with dl('php3_gd.dll');

// specify coords for the origins of the hands
// depends of the picture used as a background - draw your own !
$centrx = 29;
$centry = 29;

// depends on the background picture too.
$rmin = 22 ; // radius for minutes hand
$rhour = 12; // radius for hours hand

//
// ^ -Pi/2 rad => 0 min
// |
// |
// |
// |
// --------> O rad => 15 min
//

$minrad = -1 * (pi()/2) ; // origin is -PI/2
$hourrad = -1 * (pi()/2) ; // same as above.

// Calculate the angles for drawing the hands
$hour = (date("h")/12)*2*pi() - (pi()/2);
$min = (date("i")/60)*2*pi() - (pi()/2);

// Output the HTTP header Content-type
Header('Content-type: image/gif');

// specify path to background image file
$mypath = '/home/clauer/php3sampl/images/';

// Load watch background picture from file
$im = ImageCreateFromGIF($mypath.'watchframe.gif');

// Use pseudo "phosphore" light green for both hands
$mycolor = ImageColorAllocate($im, 153, 255, 204);

// Draw the hours and minutes hands
draw_radius($im, $centrx, $centry, $rmin, $min, $mycolor);
draw_radius($im, $centrx, $centry, $rhour, $hour, $mycolor);

// Send GIF output to client
ImageGif($im);
ImageDestroy($im);
?>

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User Comments

Christophe LAUER wrote :527
Hi all, My e-mail address is now clauer@free.fr Regards, CL