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I had the exact same issue with PHP running PDFTK on CentOS and spent a number of hours hunting things down, so I hope someone will find this useful. My specific use for PDFTK is for the FillPDF module on Drupal. The solution to the exit code 11 issue was setting a local policy module to allow httpd to run PDFTK. If you grep /var/log/audit/audit.log for pdftk like this <pre><code>grep -i pdftk /var/log/audit/audit.log </code></pre> you should see some errors, probably one for 'execmem', amongst others. Here is what I did to fix the issue... Running this command will pull the errors out of the log and put them into a file for you to review. <pre><code>grep -i pdftk /var/log/audit/audit.log | audit2allow -m pdftklocal > pdftklocal.te </code></pre> If the output looks good (e.g. there IS output), run this command to create the module. <pre><code>grep -i pdftk /var/log/audit/audit.log | audit2allow -M pdftklocal </code></pre> Once the module is created, you make the policy active by running this command. <pre><code>/usr/sbin/semodule -i pdftklocal.pp </code></pre> PDFTK should run now from PHP. If it does not, check to see if httpd_enable_cgi is on by running <pre><code>getsebool httpd_enable_cgi </code></pre> If it is not on, turn it on by running <pre><code>setsebool -P httpd_enable_cgi 1 </code></pre> Details on the policy module can be found here: <a href="http://wiki.centos.org/HowTos/SELinux#head-faa96b3fdd922004cdb988c1989e56191c257c01" rel="nofollow">http://wiki.centos.org/HowTos/SELinux#head-faa96b3fdd922004cdb988c1989e56191c257c01</a>
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1. POExecution of PDFTk from PHP script is failing with error code 11
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1. POExecution of PDFTk from PHP script is failing with error code 11
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1. COThank you... I have been banging my head on this for a few days.
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