Re: GD 1.8.3 & PNG Images - Speed

hi mark, maybe decompression takes lotsa your time and cpu usage, try to store your image in gif format [in your sql, am i right?] and see how much it differs. specially if you have few images and you have to show those few images several times! regards, Ahmad Anvari ----- Original Message ----- From: "Mark Lipscombe" <mark@itgarp.com> To: <php-general@lists.php.net> Sent: Thursday, August 31, 2000 7:19 PM Subject: [PHP] GD 1.8.3 & PNG Images - Speed > Hi, > > I'm using PHP 4.0.2 with GD 1.8.3/TTF support compiled in statically, and > PHP statically in Apache 1.3.12, using the Zend Optimiser. > > I'm retreiving information from a MySQL database to create, from an original > PNG template, a image (in this case buttons for a website) with TTF text > overlaid, which I'm then using ImagePNG to output. > > My problem is it's taking approximately 4 seconds to read the PNG file in > with ImageCreateFromPNG(). The rest of the script takes about 0.03 seconds > to complete which is quite reasonable (it's on a Linux box of reasonably > high specifications). It is definately ImageCreateFromPNG which is stalling > the script. > > If I read in from a JPEG, using ImageCreateFromJPEG(), the script comes back > down to taking a total of 0.04 secs to complete (much more reasonable :), > but JPEGs are no good for non-photographic content, and it screws with the > colouring. > > Anyone know of any speed issues with using ImageCreateFromPNG, or anything I > can do to speed it up? > > Below is the code which I'm using: > > if (@mpf_db_num_rows($image_data)) { > $image_data_values = mpf_db_fetch_array($image_data); > > $imagepath = DIR_BUTTONS . $image_data_values['sites_templates_id'] . > '.png'; > > $im = imagecreatefrompng($imagepath); // here is where it takes 4 > seconds. > $tmpl_size = GetImageSize($imagepath); > $color = ImageColorAt($im, 0, $tmpl_size[1] - 1); > > $size = ImageTTFBBox(12, 0, DIR_FONTS . > $image_data_values['fonts_filename'], $image_data_values[@'sites_button' . > $num]); > $dx = abs($size[2]-$size[0]); > $dy = abs($size[5]-$size[3]); > $xpad = abs(($tmpl_size[0] - $dx)/2); // x-axis padding > $ypad = abs(($tmpl_size[1] - $dy)/2); // y-axis padding > > ImageTTFText($im, 12, 0, (int)($xpad), $dy+(int)($ypad), -$color, > DIR_FONTS . $image_data_values['fonts_filename'], > $image_data_values[@'sites_button' . $num]); > ImagePng($im); > ImageDestroy($im); > } > > > Thanks very much :) > Mark > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >