Konversi .txt atau .pdf ke Text

<?php
if(isset($_POST["UPLOADFILE"])){
     
      $gambar0=strip_tags($_POST["gambar0"]);
if ($_FILES["gambar"] != "") {
@copy($_FILES["gambar"]["tmp_name"],"$YPATH/".$_FILES["gambar"]["name"]);
$gambar=$_FILES["gambar"]["name"];
}
else {$gambar=$gambar0;}
if(strlen($gambar)<1){$gambar=$gambar0;}


$gambar="ypathfile/$gambar";


require_once __DIR__ . '/vendor/autoload.php';
$cari=strstr($gambar,".txt");
    $p=strlen($cari);
    if($p>0){
$fh = fopen($gambar,'r');
while ($line = fgets($fh)) {
$bacapdf.=$line;
}
fclose($fh);
    }
else{//pdf
$initop = new \Smalot\PdfParser\Parser();
$ekstrakpdf = $initop->parseFile($gambar);
$bacapdf = $ekstrakpdf->gettext();
    }//echo $bacapdf;

//error_reporting(0);

$HASILBACAFILE=$bacapdf;



?>