Besides gdb, we also need debug symbols for php Segfault) gabrielle singh cadieux, 2017 These debug symbols allow gdb to map the processor instructions back to the statements and variables in the c source code of php.
You need tools for that, and gdb is the most commonly used debugger under unix platforms Examining the stack backtrace display the current call stack (can be used after a runtime error, eg Here we’ll give you an introduction to gdb and how to practice with it against the php source code
Conclusion there are so many more useful commands to run in gdb, tips for setting up cores, or digging into failure modes in php We can edit values in real time, continue until we hit a specific line or function, change the flow control, etc It is immensely powerful, though the learning curve can be steep. Info threads list all threads
Show listsize print how many are shown in the „list“ command With the attach command we can also debug an already running process using gdb's attach command to attach to a running process Again, once attached, we can use the detach command to detach from the process
