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[2008-07-06 06:27 UTC] ms at mac-specialist dot com
Description: ------------ Same exact problem as Bug #44524, which has been written off as bogus. IT IS NOT BOGUS... Problem: ------------ Calls to imagettftext always fail with no error on Leopard 10.5.3 when run under MacPorts Apache 2.2.6, PHP 5.2.5 and the GD library. Originally I tried the "PHP Form image verification" example at : http://www.reconn.us/content/view/28/49/ I then tried example ( 1 ) found on http://us.php.net/imagettftext Both examples failed to display the results and provided not visible error, so I fired up the ZEND DEBUGGER and that is when I found the culprit, I then checked the Apache error log and found... Reproduce code: --------------- <?php // This is example ( 1 ) found on http://us.php.net/imagettftext //Set the content-type header("Content-type:image/png"); //Create the image $image=imagecreatetruecolor(400,30); //Create some colors $white=imagecolorallocate($image,255,255,255); $grey=imagecolorallocate($image,128,128,128); $black=imagecolorallocate($image,0,0,0); imagefilledrectangle($image,0,0,399,29,$white); //The text to draw $text='Testing...'; //Replace path by your own font path // $font='fonts/10.ttf'; $font='/[path to font]/Arial.ttf'; //Add some shadow to the text imagettftext($image,20,0,11,21,$grey,$font,$text); //Addthetext imagettftext($image,20,0,10,20,$black,$font,$text); //Using imagepng()results in clearer text compared with imagejpeg() imagepng($image); imagedestroy($image); ?> Expected result: ---------------- Small image containing "Testing..." Actual result: -------------- Checking the Apache error log shows many instances of : Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTION ALITY___YOU_MUST_EXEC__() to debug. [Sun Jul 06 00:45:18 2008] [notice] child pid 2990 exit signal Trace/BPT trap (5) When I trace Using ZEND DEBUGGER the call to imagettftext shows where the break in execution occurs. PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Sun Dec 22 05:01:30 2024 UTC |
Please provide a link to the font you use. Also you may send the header right before the PNG generation: header("Content-type:image/png"); imagepng($image); imagedestroy($image); You may look at the contents of the page (show source), If it is a blank page, it may contain error messages not displayed because of the Content-Type.This includes the three files (which I have renamed to make them easier to distinguish), as well as the browser output source : ( 1 ) Main File : random_image_sample.php ( 2 ) Include File : inc_random_image_one.php ( a ) 'inc_random_image_one.php' requires "images/noise.jpg", which can be downloaded from http://www.reconn.us/images/noise.png ( b ) 'inc_random_image_one.php' requires that you copy 10 different named fonts from /Library/Fonts/ to ./fonts/ and rename them from "1.ttf" to "10.ttf" ( 3 ) Include File : inc_random_image_two.php ( a ) This is example ( 1 ) found on http://us.php.net/imagettftext <?php session_start(); // <!-- [4325] ( BEGIN ) random_image_sample.php --> ?> <HTML> <HEAD> <TITLE>Random image sample</TITLE> <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso- 8859-1\"> </HEAD> <BODY> <?php if(isset($_POST['Submit'])) { $number = $_POST['number']; if(md5($number) != $_SESSION['image_value']) echo '<h1>Validation string not valid! Please try again!</h1>'; else { echo '<h1>Your string is valid!</h1>'; // do something with the data } } ?> <form name="form1" method="post" action="random_sample.php"> <table cellspacing="0" width="600" align="center"> <tr><td valign="top" align="right">Comments</td> <td><input name="message" size=40 value="...your message here"> </td></tr> <tr><td colspan=2 align="center"> <font size="1" face="Geneva, Arial, Helvetica, sans- serif"><strong><font size="2"> Please enter the string shown in the image in the form.<br> The possible characters are letters from A to Z in capitalized form and the numbers from 0 to 9. </font></td></tr> <tr><td align="center" colspan=2><input name="number" type="text" id=\"number\"></td></tr> <tr><td colspan=2 align="center"> <?php $which_image = 2 ; echo ($which_image == 1) ? '<img src="inc_random_image_one.php">' : '<img src="inc_random_image_two.php">' ; ?> </td></tr> <tr><td colspan=2 align="center"><input name="Submit" type="submit" value="Submit"></td></tr> </table> </form> </BODY> </HTML> <!-- [4325] ( _END_ ) random_image_sample.php --> <?php // <!-- [4326] ( BEGIN ) inc_random_image_one.php --> // This demo requires "images/noise.jpg", which can be downloaded from http://www.reconn.us/images/noise.png // start a session session_start(); // this function is called recursivelly function random_string($len=5, $str='') { for($i=1; $i<=$len; $i++) { // Generates a random number that will be the ASCII code of the character. // We only want numbers (ascii code from 48 to 57) and caps letters. $ord=rand(48, 90); if((($ord >= 48) && ($ord <= 57)) || (($ord >= 65) && ($ord <= 90))) $str.=chr($ord); // If the number is not good we generate another one else $str.=random_string(1); } return $str; } // create the random string using the upper function (if you want more than 5 characters just modify the parameter) $rand_str=random_string(5); // We memorize the md5 sum of the string into a session variable $_SESSION['image_value'] = md5($rand_str); // Get each letter in one valiable, we will format all letters different $letter1=substr($rand_str,0,1); $letter2=substr($rand_str,1,1); $letter3=substr($rand_str,2,1); $letter4=substr($rand_str,3,1); $letter5=substr($rand_str,4,1); // Creates an image from a png file. If you want to use gif or jpg images, just use the coresponding functions: imagecreatefromjpeg and imagecreatefromgif. // You can download "noise.png" at http://www.reconn.us/images/noise.png $image=imagecreatefrompng("images/noise.png"); // $image=imagecreatefromjpeg("images/noise.jpg"); // Get a random angle for each letter to be rotated with. $angle1 = rand(-20, 20); $angle2 = rand(-20, 20); $angle3 = rand(-20, 20); $angle4 = rand(-20, 20); $angle5 = rand(-20, 20); // Get a random font. (In this examples, the fonts are located in "fonts" directory and named from 1.ttf to 10.ttf) // The easiest thing here is to copy 10 different named fonts from /Library/Fonts/ to ./fonts/ and rename them $font1 = "fonts/".rand(1, 10).".ttf"; $font2 = "fonts/".rand(1, 10).".ttf"; $font3 = "fonts/".rand(1, 10).".ttf"; $font4 = "fonts/".rand(1, 10).".ttf"; $font5 = "fonts/".rand(1, 10).".ttf"; // Define a table with colors (the values are the RGB components for each color). $colors[0]=array(122,229,112); $colors[1]=array(85,178,85); $colors[2]=array(226,108,97); $colors[3]=array(141,214,210); $colors[4]=array(214,141,205); $colors[5]=array(100,138,204); // Get a random color for each letter. $color1=rand(0, 5); $color2=rand(0, 5); $color3=rand(0, 5); $color4=rand(0, 5); $color5=rand(0, 5); // Allocate colors for letters. $textColor1 = imagecolorallocate ($image, $colors[$color1][0],$colors[$color1][1], $colors[$color1][2]); $textColor2 = imagecolorallocate ($image, $colors[$color2][0],$colors[$color2][1], $colors[$color2][2]); $textColor3 = imagecolorallocate ($image, $colors[$color3][0],$colors[$color3][1], $colors[$color3][2]); $textColor4 = imagecolorallocate ($image, $colors[$color4][0],$colors[$color4][1], $colors[$color4][2]); $textColor4 = imagecolorallocate ($image, $colors[$color5][0],$colors[$color5][1], $colors[$color5][2]); // Write text to the image using TrueType fonts. $size = 20; imagettftext($image, $size, $angle1, 10, $size+15, $textColor1, $font1, $letter1); imagettftext($image, $size, $angle2, 35, $size+15, $textColor2, $font2, $letter2); imagettftext($image, $size, $angle3, 60, $size+15, $textColor3, $font3, $letter3); imagettftext($image, $size, $angle4, 85, $size+15, $textColor4, $font4, $letter4); imagettftext($image, $size, $angle5, 110, $size+15, $textColor5, $font5, $letter5); header('Content-type: image/jpeg'); imagejpeg($image); // Output image to browser imagedestroy($image); // Destroys the image // <!-- [4326] ( _END_ ) inc_random_image_one.php --> ?> <?php // <!-- [4327] ( BEGIN ) inc_random_image_two.php --> // This is example ( 1 ) found on http://us.php.net/imagettftext //Set the content-type header("Content-type:image/png"); //Create the image $image=imagecreatetruecolor(400,30); //Create some colors $white=imagecolorallocate($image,255,255,255); $grey=imagecolorallocate($image,128,128,128); $black=imagecolorallocate($image,0,0,0); imagefilledrectangle($image,0,0,399,29,$white); //The text to draw $text='Testing...'; //Replace path by your own font path // $font='fonts/10.ttf'; // $font='/[path to font]/Arial.ttf'; $font='/Library/Fonts/Verdana.ttf'; //Add some shadow to the text imagettftext($image,20,0,11,21,$grey,$font,$text); //Addthetext imagettftext($image,20,0,10,20,$black,$font,$text); //Using imagepng()results in clearer text compared with imagejpeg() imagepng($image); imagedestroy($image); // <!-- [4327] ( _END_ ) inc_random_image_two.php --> ?> <!-- OUTPUT BROWSER SOURCE --> <!-- [4325] ( BEGIN ) random_image_sample.php --> <HTML> <HEAD> <TITLE>Random image sample</TITLE> <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso- 8859-1\"> </HEAD> <BODY> <form name="form1" method="post" action="random_sample.php"> <table cellspacing="0" width="600" align="center"> <tr><td valign="top" align="right">Comments</td> <td><input name="message" size=40 value="...your message here"> </td></tr> <tr><td colspan=2 align="center"> <font size="1" face="Geneva, Arial, Helvetica, sans- serif"><strong><font size="2"> Please enter the string shown in the image in the form.<br> The possible characters are letters from A to Z in capitalized form and the numbers from 0 to 9. </font></td></tr> <tr><td align="center" colspan=2><input name="number" type="text" id=\"number\"></td></tr> <tr><td colspan=2 align="center"> <img src="random_image_two.php"> <!-- THIS IMAGE CONTAINS NOTHING --> </td></tr> <tr><td colspan=2 align="center"><input name="Submit" type="submit" value="Submit"></td></tr> </table> </form> </BODY> </HTML> <!-- [4325] ( _END_ ) random_image_sample.php -->SUCCESS, SOMEWHAT... When I installed Zend Debugger 5.5.1 about a year and a half ago, it came with its own php.ini, and originally had a great deal of trouble getting it running. It had been compiled in 32 bit mode as best I understand it, so once I got everything working I posted a message on 4/29/2008 "Getting 32 bit ZendStudio Debugger to work with 64 bit Apache2 - PHP using MacPorts on Leopard" that provided explicit instructions on how to get it working. The message I posted on 4/29/2008 "Getting 32 bit ZendStudio Debugger to work with 64 bit Apache2 - PHP using MacPorts on Leopard" that provided explicit instructions on how to get it working, is no longer valid. In the later versions of OS X ZEND DEBUGGER DOES NOT require that you call : ---------------------------------------------------------------------- --------- RESTART THE 64 bit APACHE2 using the 32 bit mode ( 'arch -i386' ) : ---------------------------------------------------------------------- --------- shell> ~ $ sudo arch -i386 /opt/local/apache2/bin/apachectl start shell> ~ $ ps aux | grep httpd ---------------------------------------------------------------------- --------- ZEND DEBUGGER works fine using 64 bit mode : ---------------------------------------------------------------------- --------- shell> ~ $ sudo /opt/local/apache2/bin/apachectl start shell> ~ $ ps aux | grep httpd As a carry over from an old version of Zend Debugger 4.x (about 3-4 years old) my php.ini contained : ; [Zend] extension_dir=/Applications/Zend/ZendStudio-5.5.1/bin/php5 extension=pgsql.so $ which php ---> /opt/local/bin/php $ php --version ---> PHP Warning: PHP Startup: Unable to load dynamic library '/Applications/Zend/ZendStudio-5.5.1/bin/php5/pgsql.so' - (null) in Unknown on line 0 ---> Warning: PHP Startup: Unable to load dynamic library '/Applications/Zend/ZendStudio-5.5.1/bin/php5/pgsql.so' - (null) in Unknown on line 0 ---> PHP 5.2.6 (cli) (built: Jul 7 2008 15:05:26) ---> Copyright (c) 1997-2008 The PHP Group ---> Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies ---> with Zend Debugger v5.2.12, Copyright (c) 1999-2007, by Zend Technologies Originally when I tried I got the errors again : $ php inc_random_image_two.php > zippy.png ---> PHP Warning: PHP Startup: Unable to load dynamic library '/Applications/Zend/ZendStudio-5.5.1/bin/php5/pgsql.so' - (null) in Unknown on line 0 ---> Warning: PHP Startup: Unable to load dynamic library '/Applications/Zend/ZendStudio-5.5.1/bin/php5/pgsql.so' - (null) in Unknown on line 0 $ open zippy.png But when I opened zippy.png above the image worked. GOING BACK to the 'PHP Warning' : Even with the two lines below the [Zend] Apache and PHP seemed to work fine. I had seen the warnings several times in the logs but never figured out what to do about it, it turned out it was really simple : I have a php.ini that contains all my conf stuff, but ZEND DEBUGGER has its own php.ini, where it also has additional stuff, which is totally different than it used to be in the previous debugger version. ; [Zend] ; extension_dir=/Applications/Zend/ZendStudio-5.5.1/bin/php5 ; extension=pgsql.so Commenting them out solved the problem, and miraculously 'inc_random_image_two'.php below worked correctly. THIS time 'php --version' worked correctly also : $ php --version PHP 5.2.6 (cli) (built: Jul 7 2008 15:05:26) Copyright (c) 1997-2008 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies with Zend Debugger v5.2.12, Copyright (c) 1999-2007, by Zend Technologies NOW I tried calling 'random_image_sample.php' in Safari, and the image displayed correctly. The problem with 'imagettftext' dissapeared, or so I thought. The image displayed correctly as long as I do not use the ZEND DEBUGGER. If I use the debugger the line containing 'imagettftext' causes the debugger to exit without any warning, or error message. Its bizarre, because I've never seen the debugger exit this way. CONCLUSION : There appears that there were at least two or three issues causing this problem. ( 1 ) Bufoonery on my part for not resolving the 'PHP Warning' sooner. ( 2 ) The problem between 'imagettftext' and ZEND DEBUGGER. ( 3 ) 'imagettftext' did not work in 32 bit mode even without the ZEND DEBUGGER. I had also upgraded all the ports earlier today, but I don't believe they had anything to do with the image display problem. I put the code for the two sample pages on here again, in case they are helpful to others. <?php session_start(); ?> <!-- [4325] ( BEGIN ) filename : random_image_sample.php --> <HTML> <HEAD> <TITLE>Random image sample</TITLE> <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso- 8859-1\"> </HEAD> <BODY> <?php $errors=0; if(isset($_POST['Submit'])) { $number = $_POST['number']; if(md5($number) != $_SESSION['image_value']) echo '<h1>Validation string not valid! Please try again!</h1>'; else { echo '<h1>Your string is valid!</h1>'; //do something with the data } } ?> <form name="form1" method="post" action="random_sample.php"> <table cellspacing="0" width="600" align="center"> <tr><td valign="top" align="right">Comments</td> <td><input name="message" size=40 value="...your message here"> </td></tr> <tr><td colspan=2 align="center"> <font size="1" face="Geneva, Arial, Helvetica, sans- serif"><strong><font size="2"> Please enter the string shown in the image in the form.<br> The possible characters are letters from A to Z in capitalized form and the numbers from 0 to 9. </font></td></tr> <tr><td align="center" colspan=2><input name="number" type="text" id=\"number\"></td></tr> <tr><td colspan=2 align="center"> <?php $which_image = 2 ; echo ($which_image == 1) ? '<img src="inc_random_image_one.php">' : '<img src="inc_random_image_two.php">' ; ?> </td></tr> <tr><td colspan=2 align="center"><input name="Submit" type="submit" value="Submit"></td></tr> </table> </form> </BODY> </HTML> <!-- [4325] ( _END_ ) filename : random_image_sample.php --> <?php // <!-- [4327] ( BEGIN ) filename : inc_random_image_two.php --> // This is example ( 1 ) found on http://us.php.net/imagettftext header("Content-type:image/png"); //Set the content-type $image=imagecreatetruecolor(400,30); //Create the image $white=imagecolorallocate($image,255,255,255); //Create some colors $grey=imagecolorallocate($image,128,128,128); $black=imagecolorallocate($image,0,0,0); imagefilledrectangle($image,0,0,399,29,$white); $text='Testing...'; //The text to draw // $font='/[path to font]/Arial.ttf'; //Replace path by your own font path $font='/Library/Fonts/Verdana.ttf'; //Replace path by your own font path // ZEND DEBUGGER EXITS ON THE NEXT LINE WITHOUT ERROR MESSAGE imagettftext($image,20,0,11,21,$grey,$font,$text); //Add some shadow to the text imagettftext($image,20,0,10,20,$black,$font,$text); //Add the text imagepng($image); //Using imagepng() results in clearer text compared with imagejpeg() imagedestroy($image); // <!-- [4327] ( _END_ ) filename : inc_random_image_two.php --> ?> Thanks to all those that helped me with this problem... I posted this on the MacPorts forum also, and got some good insights there...