zip.php

<?php

class ZipByEntryName extends ZipArchive{
  // エントリ名でZipを管理する拡張
  // return sorted entry names
  public $encoding = "utf-8";
  protected $default_internal_encoding;
  public function __construct(){
    $this->default_internal_encoding = mb_internal_encoding();
  }
  public function open($f_name, $flags=null){
    if( preg_match("/^https?:/", $f_name) ){
      // $tmp = "/tmp/php-zip-archive-" + md5($f_name);
      $tmp = tempnam('/tmp', "php-zip-archive");
      file_put_contents($tmp, file_get_contents($f_name));
      $f_name = $tmp;
    }


    parent::open($f_name, $flags);

    $encodings = [];
    for ($i=0; $i<$this->numFiles;$i++) {
      $encodings[] = mb_detect_encoding($this->statIndex($i)["name"], "utf-8,eucjp-win,cp932");
    }
    $encodings = array_count_values($encodings);
    asort($encodings);
    $encodings = array_flip($encodings);
    $enc_name = end($encodings);
    $this->encoding = $enc_name;



  }
  public function entry_names(){
    $names = [];
    mb_internal_encoding("utf8");

    for ($i=0; $i<$this->numFiles;$i++) {
      $e =  $this->statIndex($i)["name"];
      $e = mb_convert_encoding($e, "UTF-8", $this->encoding);
      $names[] = $e;
    }
    sort($names);

    mb_internal_encoding($this->default_internal_encoding);
    return $names;
  }
  public function first_entry(){
    mb_internal_encoding("utf8");

    $name = $this->entry_names[0];
    $name = mb_convert_encoding($name, $this->encoding, "utf-8");

    mb_internal_encoding($this->default_internal_encoding);
    return $this->getFromName($name);
  }
  public function files(){
    //ディレクトリを無視してファイルを取り出してしまう
    $files = [];
    mb_internal_encoding("utf8");
    $name = null;

    foreach( $this->entry_names as $name ){
      if ( preg_match( "/\/$/" , $name ) ) {
        continue;
      }else {
        $orig_name = mb_convert_encoding($name, $this->encoding, "utf-8");
        $files[$name] = $this->getFromName($orig_name);
      }

    }
    mb_internal_encoding($this->default_internal_encoding);
    return $files;

  }
  public function first_file(){
    mb_internal_encoding("utf8");
    $name = null;

    foreach( $this->entry_names as $entry ){
      if ( preg_match( "/\/$/" , $entry ) ) {
        continue;
      }else {
        $name = $entry;
        break;
      }

    }
    $name = mb_convert_encoding($name, $this->encoding, "utf-8");

    mb_internal_encoding($this->default_internal_encoding);
    return $this->getFromName($name);
  }
  public function entries(){
    $names = $this->entry_names;
    $entries = array_map( function($e)  { return $this->getFromName($e); } , $names );
    return $entries;
  }
  public function entries_with_names(){
    $names = $this->entry_names;
    $entries = $this->entries;
    return array_combine( $names, $entries ) ;

  }
  public function __get($name){
    switch($name){
      case "entries":
      case "entry_names":
      case "first_entry":
      case "first_file":
      case "files":
      case "entries_with_names":
        return $this->$name();
    }
    throw new Exception("Undefined property");
  }
}

日本語対応した。 internal_encoding でおかしくなるっぽい