Homebrew-Cask todo lister

gistfile1.php

<?php
$todos=[];
class todo
{
    public $file;
    public $msg;
    public $linenum;
    public $text;
    function __construct($file,$line,$linenum)
    {
        $file=explode("homebrew-cask/",$file)[1];
        $done=false;
        $line=trim(explode("# todo",$line)[1]);
        if($line[0]==":") // handle todo: foo
        {
            $msg=explode(": ",$line)[1];
        }
        else if($line[0]==",") // handle todo, foo
        {
            $msg=explode(", ",$line)[1];
        }
        else if($line!=="")
        {
            $msg=$line;
        }
        else
        {
            $msg="(none provided)";
        }
        if($done)
        {
            $text= "- [X] \"$msg\" in $file line $linenum".PHP_EOL;
        }
        else
        {
            $text="- [ ] \"$msg\" in $file line $linenum".PHP_EOL;
        }
        list($this->file,$this->msg,$this->linenum,$this->text)=[$file,$msg,$linenum,$text];
    }
    public function __toString()
    {
        return $this->text;
    }
}
function find_all_files($dir) 
{ 
    $root = scandir($dir); 
    foreach($root as $value) 
    { 
        if($value === '.' || $value === '..' || $value === ".git") {continue;} 
        if(is_file("$dir/$value")) {$result[]="$dir/$value";continue;} 
        foreach(find_all_files("$dir/$value") as $value) 
        { 
            $result[]=$value; 
        } 
    } 
    return $result; 
}
$files=find_all_files("homebrew-cask/Casks");
foreach($files as $file)
{
    $contents=explode("\n",file_get_contents($file));
    $i=0;
    foreach($contents as $line)
    {
        $i++;
        if(strpos($line,"# todo")!==FALSE)
        {
            $todo=new todo($file,$line,$i);
            if($todo->msg=="improve this machine-generated value")
            {
                $j++;
                continue;
            }
            echo $todo;
        }
    }
}
echo "Plus $j \"improve this machine-generated value\"";