How to get apk package information in php, get apk package in php

Sometimes when using php to upload an Android apk package, we need to obtain the information in the Android apk package. This article describes the method of obtaining apk package information in php in the form of examples. The specific implementation method is as follows:

<&#63;php
/*解析安卓apk包中的压缩XML文件，还原和读取XML内容
依赖功能：需要PHP的ZIP包函数支持。*/
include('./Apkparser.php');
$appObj  = new Apkparser(); 
$targetFile = a.apk;//apk所在的路径地址
$res   = $appObj->open($targetFile);
$appObj->getAppName();     // 应用名称
$appObj->getPackage();    // 应用包名
$appObj->getVersionName();  // 版本名称
$appObj->getVersionCode();  // 版本代码
&#63;>

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The following is the Apkparser class package. Copy the following code and save it as Apkparser.php to execute the above code

<&#63;php
//-------------------------------
//Apkparser类包开始
//-------------------------------
class ApkParser{
//----------------------
// 公共函数，供外部调用
//----------------------
  public function open($apk_file, $xml_file='AndroidManifest.xml'){
    $zip = new \ZipArchive;
    if ($zip->open($apk_file) === TRUE) {
      $xml = $zip->getFromName($xml_file);
      $zip->close();
      if ($xml){
        try {
          return $this->parseString($xml);
        }catch (Exception $e){
        }
      }
    }
    return false;
  }
  public function parseString($xml){
    $this->xml = $xml;
    $this->length = strlen($xml);
    $this->root = $this->parseBlock(self::AXML_FILE);
    return true;
  }
  public function getXML($node=NULL, $lv=-1){
    if ($lv == -1) $node = $this->root;
    if (!$node) return '';
    if ($node['type'] == self::END_TAG) $lv--;
    $xml = @($node['line'] == 0 || $node['line'] == $this->line) &#63; '' : "\n".str_repeat(' ', $lv);
    $xml .= $node['tag'];
    $this->line = @$node['line'];
    foreach ($node['child'] as $c){
      $xml .= $this->getXML($c, $lv+1);
    }
    return $xml;
  }
  public function getPackage(){
    return $this->getAttribute('manifest', 'package');
  }
  public function getVersionName(){
    return $this->getAttribute('manifest', 'android:versionName');
  }
  public function getVersionCode(){
    return $this->getAttribute('manifest', 'android:versionCode');
  }
  public function getAppName(){
    return $this->getAttribute('manifest/application', 'android:name');
  }
  public function getMainActivity(){
    for ($id=0; true; $id++){
      $act = $this->getAttribute("manifest/application/activity[{$id}]/intent-filter/action", 'android:name');
      if (!$act) break;
      if ($act == 'android.intent.action.MAIN') return $this->getActivity($id);
    }
    return NULL;
  }
  public function getActivity($idx=0){
    $idx = intval($idx);
    return $this->getAttribute("manifest/application/activity[{$idx}]", 'android:name');
  }
  public function getAttribute($path, $name){
    $r = $this->getElement($path);
    if (is_null($r)) return NULL;
    if (isset($r['attrs'])){
      foreach ($r['attrs'] as $a){
        if ($a['ns_name'] == $name) return $this->getAttributeValue($a);
      }
    }
    return NULL;
  }
//----------------------
// 类型常量定义
//----------------------
  const AXML_FILE       = 0x00080003;
  const STRING_BLOCK     = 0x001C0001;
  const RESOURCEIDS      = 0x00080180;
  const START_NAMESPACE    = 0x00100100;
  const END_NAMESPACE     = 0x00100101;
  const START_TAG       = 0x00100102;
  const END_TAG        = 0x00100103;
  const TEXT         = 0x00100104;
  const TYPE_NULL       =0;
  const TYPE_REFERENCE    =1;
  const TYPE_ATTRIBUTE    =2;
  const TYPE_STRING      =3;
  const TYPE_FLOAT      =4;
  const TYPE_DIMENSION    =5;
  const TYPE_FRACTION     =6;
  const TYPE_INT_DEC     =16;
  const TYPE_INT_HEX     =17;
  const TYPE_INT_BOOLEAN   =18;
  const TYPE_INT_COLOR_ARGB8 =28;
  const TYPE_INT_COLOR_RGB8  =29;
  const TYPE_INT_COLOR_ARGB4 =30;
  const TYPE_INT_COLOR_RGB4  =31;
  const UNIT_MASK       = 15;
  private static $RADIX_MULTS = array(0.00390625, 3.051758E-005, 1.192093E-007, 4.656613E-010);
  private static $DIMENSION_UNITS = array("px","dip","sp","pt","in","mm","","");
  private static $FRACTION_UNITS = array("%","%p","","","","","","");
  private $xml='';
  private $length = 0;
  private $stringCount = 0;
  private $styleCount = 0;
  private $stringTab = array();
  private $styleTab = array();
  private $resourceIDs = array();
  private $ns = array();
  private $cur_ns = NULL;
  private $root = NULL;
  private $line = 0;
//----------------------
// 内部私有函数
//----------------------
  private function getElement($path){
    if (!$this->root) return NULL;
    $ps = explode('/', $path);
    $r = $this->root;
    foreach ($ps as $v){
      if (preg_match('/([^\[]+)\[([0-9]+)\]$/', $v, $ms)){
        $v = $ms[1];
        $off = $ms[2];
      }else {
        $off = 0;
      }
      foreach ($r['child'] as $c){
        if ($c['type'] == self::START_TAG && $c['ns_name'] == $v){
          if ($off == 0){
            $r = $c; continue 2;
          }else {
            $off--;
          }
        }
      }
      // 没有找到节点
      return NULL;
    }
    return $r;
  }
  private function parseBlock($need = 0){
    $o = 0;
    $type = $this->get32($o);
    if ($need && $type != $need) throw new Exception('Block Type Error', 1);
    $size = $this->get32($o);
    if ($size < 8 || $size > $this->length) throw new Exception('Block Size Error', 2);
    $left = $this->length - $size;
    $props = false;
    switch ($type){
      case self::AXML_FILE:
        $props = array(
          'line' => 0,
          'tag' => '<&#63;xml version="1.0" encoding="utf-8"&#63;>'
        );
      break;
      case self::STRING_BLOCK:
        $this->stringCount = $this->get32($o);
        $this->styleCount = $this->get32($o);
        $o += 4;
        $strOffset = $this->get32($o);
        $styOffset = $this->get32($o);
        $strListOffset = $this->get32array($o, $this->stringCount);
        $styListOffset = $this->get32array($o, $this->styleCount);
        $this->stringTab = $this->stringCount > 0 &#63; $this->getStringTab($strOffset, $strListOffset) : array();
        $this->styleTab = $this->styleCount > 0 &#63; $this->getStringTab($styOffset, $styListOffset) : array();
        $o = $size;
      break;
      case self::RESOURCEIDS:
        $count = $size / 4 - 2;
        $this->resourceIDs = $this->get32array($o, $count);
      break;
      case self::START_NAMESPACE:
        $o += 8;
        $prefix = $this->get32($o);
        $uri = $this->get32($o);
        if (empty($this->cur_ns)){
          $this->cur_ns = array();
          $this->ns[] = &$this->cur_ns;
        }
        $this->cur_ns[$uri] = $prefix;
      break;
      case self::END_NAMESPACE:
        $o += 8;
        $prefix = $this->get32($o);
        $uri = $this->get32($o);
        if (empty($this->cur_ns)) break;
        unset($this->cur_ns[$uri]);
      break;
      case self::START_TAG:
        $line = $this->get32($o);
        $o += 4;
        $attrs = array();
        $props = array(
          'line' => $line,
          'ns' => $this->getNameSpace($this->get32($o)),
          'name' => $this->getString($this->get32($o)),
          'flag' => $this->get32($o),
          'count' => $this->get16($o),
          'id' => $this->get16($o)-1,
          'class' => $this->get16($o)-1,
          'style' => $this->get16($o)-1,
          'attrs' => &$attrs
        );
        $props['ns_name'] = $props['ns'].$props['name'];
        for ($i=0; $i < $props['count']; $i++){
          $a = array(
            'ns' => $this->getNameSpace($this->get32($o)),
            'name' => $this->getString($this->get32($o)),
            'val_str' => $this->get32($o),
            'val_type' => $this->get32($o),
            'val_data' => $this->get32($o)
          );
          $a['ns_name'] = $a['ns'].$a['name'];
          $a['val_type'] >>= 24;
          $attrs[] = $a;
        }
        // 处理TAG字符串
        $tag = "<{$props['ns_name']}";
        foreach ($this->cur_ns as $uri => $prefix){
          $uri = $this->getString($uri);
          $prefix = $this->getString($prefix);
          $tag .= " xmlns:{$prefix}=\"{$uri}\"";
        }
        foreach ($props['attrs'] as $a){
          $tag .= " {$a['ns_name']}=\"".
              $this->getAttributeValue($a).
              '"';
        }
        $tag .= '>';
        $props['tag'] = $tag;
        unset($this->cur_ns);
        $this->cur_ns = array();
        $this->ns[] = &$this->cur_ns;
        $left = -1;
      break;
      case self::END_TAG:
        $line = $this->get32($o);
        $o += 4;
        $props = array(
          'line' => $line,
          'ns' => $this->getNameSpace($this->get32($o)),
          'name' => $this->getString($this->get32($o))
        );
        $props['ns_name'] = $props['ns'].$props['name'];
        $props['tag'] = "</{$props['ns_name']}>";
        if (count($this->ns) > 1){
          array_pop($this->ns);
          unset($this->cur_ns);
          $this->cur_ns = array_pop($this->ns);
          $this->ns[] = &$this->cur_ns;
        }
      break;
      case self::TEXT:
        $o += 8;
        $props = array(
          'tag' => $this->getString($this->get32($o))
        );
        $o += 8;
      break;
      default:
        throw new Exception('Block Type Error', 3);
      break;
    }
    $this->skip($o);
    $child = array();
    while ($this->length > $left){
      $c = $this->parseBlock();
      if ($props && $c) $child[] = $c;
      if ($left == -1 && $c['type'] == self::END_TAG){
        $left = $this->length;
        break;
      }
    }
    if ($this->length != $left) throw new Exception('Block Overflow Error', 4);
    if ($props){
      $props['type'] = $type;
      $props['size'] = $size;
      $props['child'] = $child;
      return $props;
    }else {
      return false;
    }
  }
  private function getAttributeValue($a){
    $type = &$a['val_type'];
    $data = &$a['val_data'];
    switch ($type){
      case self::TYPE_STRING:
        return $this->getString($a['val_str']);
      case self::TYPE_ATTRIBUTE:
        return sprintf('&#63;%s%08X', self::_getPackage($data), $data);
      case self::TYPE_REFERENCE:
        return sprintf('@%s%08X', self::_getPackage($data), $data);
      case self::TYPE_INT_HEX:
        return sprintf('0x%08X', $data);
      case self::TYPE_INT_BOOLEAN:
        return ($data != 0 &#63; 'true' : 'false');
      case self::TYPE_INT_COLOR_ARGB8:
      case self::TYPE_INT_COLOR_RGB8:
      case self::TYPE_INT_COLOR_ARGB4:
      case self::TYPE_INT_COLOR_RGB4:
        return sprintf('#%08X', $data);
      case self::TYPE_DIMENSION:
        return $this->_complexToFloat($data).self::$DIMENSION_UNITS[$data & self::UNIT_MASK];
      case self::TYPE_FRACTION:
        return $this->_complexToFloat($data).self::$FRACTION_UNITS[$data & self::UNIT_MASK];
      case self::TYPE_FLOAT:
        return $this->_int2float($data);
    }
    if ($type >=self::TYPE_INT_DEC && $type < self::TYPE_INT_COLOR_ARGB8){
      return (string)$data;
    }
    return sprintf('<0x%X, type 0x%02X>', $data, $type);
  }
  private function _complexToFloat($data){
    return (float)($data & 0xFFFFFF00) * self::$RADIX_MULTS[($data>>4) & 3];
  }
  private function _int2float($v) {
    $x = ($v & ((1 << 23) - 1)) + (1 << 23) * ($v >> 31 | 1);
    $exp = ($v >> 23 & 0xFF) - 127;
    return $x * pow(2, $exp - 23);
  }
  private static function _getPackage($data){
    return ($data >> 24 == 1) &#63; 'android:' : '';
  }
  private function getStringTab($base, $list){
    $tab = array();
    foreach ($list as $off){
      $off += $base;
      $len = $this->get16($off);
      $mask = ($len >> 0x8) & 0xFF;
      $len = $len & 0xFF;
      if ($len == $mask){
        if ($off + $len > $this->length) throw new Exception('String Table Overflow', 11);
        $tab[] = substr($this->xml, $off, $len);
      }else {
        if ($off + $len * 2 > $this->length) throw new Exception('String Table Overflow', 11);
        $str = substr($this->xml, $off, $len * 2);
        $tab[] = mb_convert_encoding($str, 'UTF-8', 'UCS-2LE');
      }
    }
    return $tab;
  }
  private function getString($id){
    if ($id > -1 && $id < $this->stringCount){
      return $this->stringTab[$id];
    }else {
      return '';
    }
  }
  private function getNameSpace($uri){
    for ($i=count($this->ns); $i > 0; ){
      $ns = $this->ns[--$i];
      if (isset($ns[$uri])){
        $ns = $this->getString($ns[$uri]);
        if (!empty($ns)) $ns .= ':';
        return $ns;
      }
    }
    return '';
  }
  private function get32(&$off){
    $int = unpack('V', substr($this->xml, $off, 4));
    $off += 4;
    return array_shift($int);
  }
  private function get32array(&$off, $size){
    if ($size <= 0) return NULL;
    $arr = unpack('V*', substr($this->xml, $off, 4 * $size));
    if (count($arr) != $size) throw new Exception('Array Size Error', 10);
    $off += 4 * $size;
    return $arr;
  }
  private function get16(&$off){
    $int = unpack('v', substr($this->xml, $off, 2));
    $off += 2;
    return array_shift($int);
  }
  private function skip($size){
    $this->xml = substr($this->xml, $size);
    $this->length -= $size;
  }
}
//---------------------
//Apkparser类包结束 
//---------------------
&#63;>

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Interested friends can debug and run the example in this article. I believe it will bring some inspiration to everyone's PHP program development.

How to get an http package in php

$_POST is an array, echo $_POST is of course Array. You can var_dump($_POST) to see the parameters and values in the array. If the parameter you passed is a and the value is hello, you can use $_POST['a'] to get it, imitating the GET method welcome.php?a=hello
echo $_GET['a'];

Can a php page specify to send a message to an Android apk program that accesses it?

Your current approach is the only feasible approach. You can only refresh the APK regularly. Unless the APK and the server remain connected, the server's PHP is the service to find the APK, because your APK is not a server and cannot be executed in reverse.

If you want to reduce the pressure on the server, you must make your APK a server, listen on a network port, and allow other devices on the network to connect. However, this project will be very large, and the logic of APK and PHP will become very complicated, because PHP needs to find APK when needed. If the phone is turned off, it will have to wait for a while, and APK needs to use services in order to wait for PHP to connect at any time. Work the way you want and be on call at any time.