GD Library Text on Image

[overflo]

The following is some code that was supplied to me by a Tek-Tips member (pjadie - thanks again) which works great except when I try to save it to file. I have tried to add to the imagepng($im);
with this
imagepng($im, 'new_image.png', 100);
i have also tried by declaring a $new_image variable but it won't work.

Any ideas???

Cheers

<?php

//get tektips logo
$im = imagecreatefromgif('[URL unfurl="true"]http://www.tek-tips.com/images/logo.gif');[/URL]

//get the image size
$w = imagesx($im);
$h = imagesy($im);

//now create the text on a new canvas (i've used identical sized canvases but in practice you probably will not want to do so)
$text = imagecreatetruecolor($w, $h);
//place some text at the top left
imagestring($text, 5, 0, 0, 'Tek-Tips', 0x0000FF);


// merge the two canvas
//set opacity to 50%
imagecopymerge($im, $text, 0, 0, 0, 0, $w, $h, 50);

// output the image
header('Content-Type: image/png');
imagepng($im);
imagedestroy ($text);
imagedestroy($im);
?>

 

[overflo]

Sorry - the member that supplied the code was jpadie (not pjadie - sorry)

 

[jpadie]

i don't think 100 will work as a value. it should be between 0 and 9.

try this

error_reporting (E_ALL); ini_set('error_display', true);
imagepng($im, 'new_image.png', 0);

if that does not work then ensure that the current working directory is writable by the php process.

 

[overflo]

Before I put the error_reporting line in it prints the web address on the page, after the error_reporting line nothing.

 

[jpadie]

sorry the ini_set should be for display_errors

ini_set('display_errors', true);

 

[overflo]

Getting this error
Warning: imagepng() [function.imagepng]: Unable to open 'new_img.png' for writing: Permission denied in /lecturers/brockk/

http://www/test/addtext.php

on line 89

 

[jpadie]

as I said above

if that does not work then ensure that the current working directory is writable by the php process.

clearly the directory is NOT writable by php. you need to change this although it may be that your host does not permit such a change.
This is a file-system issue.

 

[overflo]

changed to 777 all working now. Once again thankyou for your help.

Cheers