Git hook to prevent committing xdebug_break() functions. Save as .git/hooks/pre-commit then chmod +x it. Submodules also have their own hooks folder: ".git/modules/submodule/path/here/hooks".

pre-commit

#!/bin/sh

for FILE in `git diff --cached --name-only` ; do
    # Check if the file contains 'debugger'
    grep -qE '^[ \t]*xdebug_break()' $FILE
    if [[ $? -eq 0 ]]
    then
        echo $FILE ' contains xdebug_break()! To commit retry with --no-verify'
        exit 1
    fi
done

exit