[SOLVED] Security Image : PHP Could not find/open font

[tim101011]

Hi, I am using a security image on my sites signup page to prevent automated bots creating accounts.

 

I am using the GD2 graphics library extension to do this.

 

I had this working perfectly on my computer at home, however it wont seem to work on my live web server, I keep getting the error message:

 

Warning: imagettfbbox() [function.imagettfbbox]: Could not find/open font in /var/www/vhosts/propertyeagle.co.uk/httpdocs/securityimage.php on line 35

 

I have uploaded the font "arial.ttf" into the location specified.

 

Here is the code:

 

<?php 

//Generate Reference ID
if (isset($HTTP_GET_VARS["refid"]) && $HTTP_GET_VARS["refid"]!="") {
   $referenceid = stripslashes($HTTP_GET_VARS["refid"]);
} else {
   $referenceid = md5(mktime()*rand());
}

//Select Font
$font = "arial.ttf";

//Select random background image
$bgurl = rand(1, 3);
$im = ImageCreateFromPNG("bg".$bgurl.".PNG");

//Generate the random string
$chars = array("a","A","b","B","c","C","d","D","e","E","f","F","g",
"G","h","H","i","I","j","J","k",
"K","l","L","m","M","n","N","o","O","p","P","q","Q",
"r","R","s","S","t","T","u","U","v",
"V","w","W","x","X","y","Y","z","Z","1","2","3","4",
"5","6","7","8","9");
$length = 8;
$textstr = "";
for ($i=0; $i<$length; $i++) {
   $textstr .= $chars[rand(0, count($chars)-1)];
}

//Create random size, angle, and dark color
$size = rand(12, 16);
$angle = rand(-5, 5);
$color = ImageColorAllocate($im, rand(0, 100), rand(0, 100), rand(0, 100));

//Determine text size, and use dimensions to generate x & y coordinates
$textsize = imagettfbbox($size, $angle, $font, $textstr);
$twidth = abs($textsize[2]-$textsize[0]);
$theight = abs($textsize[5]-$textsize[3]);
$x = (imagesx($im)/2)-($twidth/2)+(rand(-20, 20));
$y = (imagesy($im))-($theight/2);

//Add text to image
ImageTTFText($im, $size, $angle, $x, $y, $color, $font, $textstr);

//Output PNG Image
header("Content-Type: image/png");
ImagePNG($im);

//Destroy the image to free memory
imagedestroy($im);

session_start();
$_SESSION['$securitycode']= $textstr;

//End Output
exit;

?>

 

 

I have had this error for a few weeks now. Any ideas?

 

Thankyou

 

[MadTechie]

$font = "arial.ttf";

 

either the font isn't installed on the server or its in a different place..

[tim101011]

Its definitely in the right place, whether its installed or not I don't know..

 

I don't know what you mean by installed, I guess just putting in the right location may not be enough.

 

The server is running on Linux not windows, are ttf fonts only windows compatible?

 

[MadTechie]

i guess you could try (for a test)

<?php
//Select Font
$font = dirname(__FILE__)."/arial.ttf";
if(!file_exists($font))
{
die("Font Missing");
}
?>

[tim101011]

i tried that test:

 

http://212.241.216.160/fonttest.php

 

and i get a blank screen, i guess that means the font is in the right place.

 

I was thinking, maybe the font needs to be installed on my server like you said. I don't know how to do this, do you think I could just pickup the font from a URL where it is installed, i.e from someone elses site? Is this a bad/wont work idea?

[MadTechie]

have you tried adding

$font = dirname(__FILE__)."/arial.ttf";

to your security image code ?

[tim101011]

like this?:

 

$font = dirname(http://212.241.216.160/)."arial.ttf";

[MadTechie]

nope

just change

//Select Font
$font = "arial.ttf";

to

//Select Font
$font = dirname(__FILE__)."/arial.ttf";

[tim101011]

my goodness! that worked!

 

i cant thank you enough