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<?php // using debug_backtrace(); function a($inicial) { echo "Inicial => ", $inicial; $total = $inicial++; b($total); } function b($total) { echo "Total => ", $total; print_r(debug_backtrace()); } a(1);
Output for 7.0.0 - 7.2.6
Inicial => 1Total => 1Array ( [0] => Array ( [file] => /in/NvaZ9 [line] => 8 [function] => b [args] => Array ( [0] => 1 ) ) [1] => Array ( [file] => /in/NvaZ9 [line] => 17 [function] => a [args] => Array ( [0] => 2 ) ) )
Output for 4.3.0 - 5.6.28
Inicial => 1Total => 1Array ( [0] => Array ( [file] => /in/NvaZ9 [line] => 8 [function] => b [args] => Array ( [0] => 1 ) ) [1] => Array ( [file] => /in/NvaZ9 [line] => 17 [function] => a [args] => Array ( [0] => 1 ) ) )