#!/usr/bin/php
stackcollapse-xdebug.php  collapse php function traces into single lines.

Parses php samples generated by xdebug with xdebug.trace_format = 1
and outputs stacks as single lines, with methods separated by semicolons,
and then a space and an occurrence count. For use with flamegraph.pl.
See https://github.com/brendangregg/FlameGraph.

USAGE: ./stackcollapse-xdebug.php [OPTIONS] infile > outfile
    -h --help    Show this message
    -t           Weight stack counts by duration using the time index in the trace (default)
    -c           Invocation counts only. Simply count stacks in the trace and sum duplicates, don't weight by duration.

Example input:
For more info on xdebug and generating traces see
https://xdebug.org/docs/execution_trace.

Version: 2.0.0RC4-dev
TRACE START [2007-05-06 18:29:01]
1    0    0    0.010870    114112    {main}    1    ../trace.php    0
2    1    0    0.032009    114272    str_split    0    ../trace.php    8
2    1    1    0.032073    116632
2    2    0    0.033505    117424    ret_ord    1    ../trace.php    10
3    3    0    0.033531    117584    ord    0    ../trace.php    5
3    3    1    0.033551    117584
...
TRACE END   [2007-05-06 18:29:01]

Example output:

- c
{main};str_split 1
{main};ret_ord;ord 6

-t
{main} 23381
{main};str_split 64
{main};ret_ord 215
{main};ret_ord;ord 106