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adversaries can attack the encoding of source code files to inject vulnerabilities
The trick is to use Unicode control characters to reorder tokens in source code at the encoding level.
First, install PHP debugging extensions for gdb, for example:
debuginfo-install php-5.6.8 # if you use yum
aptitude install php5-dbg # if you use aptitude
Then simply:
php_version=5.6.8
php_script_pid=$(pgrep -f $php_script_name)
curl https://raw.githubusercontent.com/php/php-src/PHP-$php_version/.gdbinit >> ~/.gdbinit
gdb …