Get current Git Branch in PHP

getCurrentGitBranch.php

/*
Get current Git Branch in PHP
See: https://stackoverflow.com/a/7448133/3091226#
*/ 
$stringfromfile = file('.git/HEAD', FILE_USE_INCLUDE_PATH);
$firstLine = $stringfromfile[0]; //get the string from the array
$explodedstring = explode("/", $firstLine, 3); //seperate out by the "/" in the string
$explodedstring = array_slice($explodedstring , 2);
$branchname = trim(implode("/", $explodedstring));