parte .srt

<?php
   //parte los subtitulos de Youtube en 2 :)
   //@toro 2022-11-28 https://tar.mx/
   //
   $filex = "/Users/gnu/Downloads/captions.srt";
   if(isset($argv[1]) && is_file($argv[1])) $filex = $argv[1];
   $file = file_get_contents($filex);
   $data= explode("\n\n",$file);
   $ndata = [];
   foreach($data as $k=>$v) {
      if(empty($v)) continue;
      $v = explode("\n",$v);
      $nl = $v[2];
      //$nl = mb_strlen($nl,'UTF-8');
      @$nl = explode("\n",wordwrap($nl,  ceil(mb_strlen($nl,'UTF-8')/2)+3));
      unset($v[2]);
      $v = array_merge($v,$nl);
      $ndata[($k+1)] = implode("\n",$v);
   }
   $file = str_replace(".srt","-2.srt",$filex);
   echo $file."\n";
   $data = null;
   foreach($ndata AS $k=>$v) {
      $data .= $v."\n\n";
   }
   file_put_contents($file,trim($data));
   // print_r($ndata);