> -----Original Message----- > From: Daevid Vincent [mailto:daevid@xxxxxxxxxx] > Sent: Monday, December 06, 2010 4:02 PM > To: php-general@xxxxxxxxxxxxx > Subject: How can I call GD's imagepng() directly from my class? > > I have a class that does some massive computations to compute a LOPA > (layout of passenger aircraft). > > I currently render it in an HTML table with little seats. I > want to now > make this using GD so I can show entire fleets of aircraft on > one page. > > Inside my LOPA.class.php I have this method: > > public function render_image() > { > $my_img = imagecreate( 200, 80 ); > $background = imagecolorallocate( $my_img, 0, 0, 255 ); > $text_colour = imagecolorallocate( $my_img, > 255, 255, 0 ); > $line_colour = imagecolorallocate( $my_img, > 128, 255, 0 ); > imagestring( $my_img, 4, 30, 25, "Test Image", > $text_colour > ); > imagesetthickness ( $my_img, 5 ); > imageline( $my_img, 30, 45, 165, 45, $line_colour ); > > header( "Content-type: image/png" ); > header('Content-Length: ' . strlen($my_img)); > imagepng( $my_img ); > > imagecolordeallocate( $line_color ); > imagecolordeallocate( $text_color ); > imagecolordeallocate( $background ); > imagedestroy( $my_img ); > } > > > And I'm trying to call it from a PHP page like so: > > <img src="<?php $my_lopa->render_image(); ?>" alt="Image > created by a PHP > script" width="200" height="80"> > > But it doesn't show the picture. :\ > > If I take the contents of that function and dump it into a > "gdtest.php" > file and call it like this however, it does work: > > <img src="images/gdtest.php" alt="Image created by a PHP script" > width="200" height="80"> > > So what am I doing wrong above that I can't just call it from > my class? > I got a little 'hack' further, but not loving it. Maybe I'll move the image to a $_SESSION variable and then have the "gdtest.php" pull it and echo it that way.... public function render_image() { $my_img = imagecreate( 200, 80 ); $background = imagecolorallocate( $my_img, 0, 0, 255 ); $text_colour = imagecolorallocate( $my_img, 255, 255, 0 ); $line_colour = imagecolorallocate( $my_img, 128, 255, 0 ); imagestring( $my_img, 4, 30, 25, "Test Image", $text_colour ); imagesetthickness ( $my_img, 5 ); imageline( $my_img, 30, 45, 165, 45, $line_colour ); ob_start(); header( "Content-type: image/png" ); header('Content-Length: ' . strlen($my_img)); imagepng( $my_img ); $final_image_data = ob_get_contents(); ob_end_clean(); imagecolordeallocate( $line_color ); imagecolordeallocate( $text_color ); imagecolordeallocate( $background ); imagedestroy( $my_img ); echo 'data:image/png;base64,'.base64_encode($final_image_data); } <img src="<?php $my_lopa->render_image(); ?>" width="200" height="80"> -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
