Adodbzip class instance in php, phpadodbzip class instance

The example in this article describes the adodbzip program code in php. Share it with everyone for your reference. The details are as follows:

Copy code The code is as follows:

/**
* AdodbZip 1.1
*
* Code example:
* include_once 'AdodbZip.php';
* $db = AdodbZip::init(NewADOConnection('mysql tutorialt'));
* echo $db->GetOne('SELECT NOW()');
*
* Process description:
* 1. If the Adodb program file in $extract_dir exists and $zip_file does not exist; use the Adodb program file in $extract_dir.
* 2. If the Adodb program file in $extract_dir exists, and $zip_file exists; compare the modification time, and the Adodb program file in $extract_dir is updated to the newer one.
* 3. If the Adodb program file in $extract_dir does not exist and $zip_file exists; then the Adodb program file in $extract_dir is decompressed from $zip_file.
* 4. If the Adodb program file in $extract_dir does not exist and $zip_file does not exist; download the Adodb Zip file from $zip_url and decompress the Adodb program file.
*Other instructions:
* 1. $extract_dir can be customized. If you completely extract the Adodb Zip package to this directory, you can ignore the $zip_url and $zip_file settings, which is the same as using Adodb traditionally.
* 2. $zip_file can be customized. If $zip_file exists, $zip_url can be ignored, so that $zip_file can be used uniformly throughout the site.
* 3. $zip_url can be customized. The Adobe version can be modified at any time. At this time, it is best to use the default values for $zip_file and $extract_dir, so that the versions do not interfere with each other.
* 4. $server, $user, $pwd, $db can be customized. The default is the mysql default value. This item only takes effect after calling the AdodbZip::init method.
* 5. $charset can be customized. By default, the encoding is not changed. This item only takes effect after calling the AdodbZip::init method.
* 6. Adodb initialization value can be added in AdodbZip::init method.
*/

/**
* AdodbZip startup item
*/
// Set parameters
AdodbZip::$zip_url = 'http://c.net tutorial works-kr-1.dl.sourceforge.net/project/adodb/adodb-php5-only/adodb-509-for-php5/adodb509.zip'; //[Setting Item] Adobe’s Zip file download address. If the file is large, it is recommended to download or decompress it first
AdodbZip::$zip_file = sys_get_temp_dir () . preg_replace ( '/^.*/(adodb.*?.zip)$/i', 'adodb/$1', AdodbZip::$zip_url ); //[Setting item] Adodb’s Zip file cache location
AdodbZip::$entry_dir = 'adodb5';
AdodbZip::$extract_dir = sys_get_temp_dir () . 'adodb/' . AdodbZip::$entry_dir; //[Setting item] Adodb program file cache location
AdodbZip::$server = 'localhost'; //[Setting item] Server
AdodbZip::$user = 'root'; //[Setting item] Username
AdodbZip::$pwd = ''; //[Setting Item] Password
AdodbZip::$db = 'test'; //[Setting Item] Database Tutorial
AdodbZip::$charset = ''; //[Setting item] encoding

// Registration Agreement
if (! in_array ( 'AdodbZip', stream_get_wrappers () )) {
stream_wrapper_register ( 'AdodbZip', 'AdodbZip' );
}
// Define constants
if (! defined ( 'ADODB_DIR' )) {
define ( 'ADODB_DIR', 'AdodbZip:/' );
}
// Contains program
require_once (ADODB_DIR . '/adodb.inc.php');
// $db = AdodbZip::init(NewADOConnection('mysqlt')); // [Selected Item] Reference is defined $db
// return AdodbZip::init(NewADOConnection('mysqlt')); // [Selection] reference will return $db. Note that it can only be referenced once.

/**
* AdodbZip class definition
*/
class AdodbZip {

/**
* Adodb variable
*/
public static $zip_url;
public static $zip_file;
public static $entry_dir;
public static $extract_dir;
public static $server;
public static $user;
public static $pwd;
public static $db;
public static $charset;

/**
* Stream variable
*/
private $handle;
public $context;

/**
* Adodb function group
*/

/**
* init
* @param adodb &$adodb
* @return adodb
*/
public static function init(&$adodb) {
$adodb->Connect ( self::$server, self::$user, self::$pwd, self::$db );
if(self::$charset!=''){
$adodb->Execute('SET NAMES '.self::$charset.';');
}
Return $adodb;
}

/**
* Stream function group
*/

/**
* __construct
*/
public function __construct() {
}

/**
* stream_cast
* @param int $cast_as
* @return resource
*/
public function stream_cast($cast_as) {
return false;
}

/**
* stream_close
*/
public function stream_close() {
fclose ( $this->handle );
}

/**
* stream_eof
* @return bool
*/
public function stream_eof() {
return feof ( $this->handle );
}

/**
* stream_flush
* @return bool
*/
public function stream_flush() {
return fflush ( $this->handle );
}

/**
* stream_lock
* @param mode $options
* @return bool
*/
public function stream_lock($options) {
return flock ( $this->handle, $options );
}

/**
* stream_open
* @param string $path
* @param string $mode
* @param int $options
* @param string &$opend_path
* @return bool
*/
public function stream_open($path, $mode, $options, &$opend_path) {
// 验证文件地址
if (! preg_match ( '/^.*?://(.*)$/', $path, $matches )) {
   return false;
}
$tmp_file = self::$extract_dir . DIRECTORY_SEPARATOR . $matches [1];
$entry_file = self::$entry_dir . '/' . str_replace ( '', '/', $matches [1] );
$zip_file = self::$zip_file;
// 验证程序文件
if (! file_exists ( $tmp_file ) || file_exists ( $zip_file ) && filectime ( $tmp_file ) < filectime ( $zip_file )) {
   // 下载文件
   if (! file_exists ( $zip_file )) {
    // 目录处理
    if (! is_dir ( dirname ( self::$zip_file ) )) {
     if (mkdir ( dirname ( self::$zip_file ), 0777, true ) === false) {
      header ( 'Content-type: text/html;charset=utf-8' );
      die ( '请创建目录 ' . $zip_dir );
     }
    }
    // 下载文件
    if (! file_exists ( self::$zip_file )) {
     $break = true;
     do {
      $url_arr = parse_url ( self::$zip_url );
      $fp = fsockopen ( $url_arr ['host'], isset ( $url_arr ['port'] ) ? ( int ) $url_arr ['port'] : 80, $errno, $errstr, 10 );
      if ($fp === false) {
       break;
      }
      $out = "GET " . $url_arr ['path'] . " HTTP/1.0rnHost: " . $url_arr ['host'] . " rnConnection: closernrn";
      fputs ( $fp, $out );
      if (feof ( $fp )) {
       break;
      }
      $buffer = fgets ( $fp, 1024 );
      if (! preg_match ( '/^HTTP/1.d 200 /i', $buffer )) {
       break;
      }
      $content_length = false;
      $content_start = false;
      while ( ! feof ( $fp ) ) {
       $buffer = fgets ( $fp, 1024 );
       if ($buffer === "rn") {
        $content_start = true;
        break;
       }
       if (preg_match ( '/^Content-Length:s*(d+)/i', $buffer, $matches )) {
        $content_length = ( int ) $matches [1];
       }
      }
      if ($content_length === false || $content_start === false) {
       break;
      }
      $content = stream_get_contents ( $fp );
      if ($content === false) {
       break;
      }
      $result = file_put_contents ( self::$zip_file, $content );
      unset ( $content );
If ($result === false) {
        break;
        }
        fclose ( $fp );
} while ( $break = false );
If ($break) {
header ( 'Content-type: text/html;charset=utf-8' );
die ( 'Please download the file' . self::$zip_url . '.zip Save as' . self::$zip_file ) ;
}
}
}
//Create directory
$tmp_dir = dirname ( $tmp_file );
if (! is_dir ( $tmp_dir )) {
If (mkdir ( $tmp_dir, 0777, true ) === false) {
header ( 'Content-type: text/html;charset=utf-8' );
         die ( 'Please create directory ' . $tmp_dir );
}
}
// Open the compressed file
$zip = zip_open ( $zip_file );
if (! is_resource ( $zip )) {
Return false;
}
// Find the unzipped file
do {
$entry = zip_read ( $zip );
If (! is_resource ( $entry )) {
Return false;
}
If (zip_entry_name ( $entry ) == $entry_file) {
Break;
}
} while (true);
// Transfer compressed file
zip_entry_open ( $zip, $entry );
file_put_contents ( $tmp_file, zip_entry_read ( $entry, zip_entry_filesize ( $entry ) ) );
zip_entry_close ( $entry );
zip_close ( $zip );
}
// Open file
$this->handle = fopen ( $tmp_file, $mode );
if (! is_resource ( $this->handle )) {
Return false;
}
Return true;
}

/**
* stream_read
* @param int $count
* @return string
*/
public function stream_read($count) {
Return fread ( $this->handle, $count );
}

/**
* stream_seek
* @param int $offset
* @param int $whence=SEEK_SET
* @return bool
*/
public function stream_seek($offset, $whence = SEEK_SET) {
return fseek ( $this->handle, $offset, $whence );
}

/**
* stream_set_option
* @param int $option
* @param int $arg1
* @param int $arg2
* @return bool
*/
public function stream_set_option($option, $arg1, $arg2) {
return false;
}

/**
* stream_stat
* @return array
*/
public function stream_stat() {
Return fstat ( $this->handle );
}

/**
* stream_tell
* @return int
*/
public function stream_tell() {
return ftell ( $this->handle );
}

/**
* stream_write
* @param string $data
* @return int
*/
public function stream_write($data) {
Return fwrite ( $this->handle, $data );
}

/**
* url_stat
* @param string $path
* @param int $flag
* @return array
*/
public function url_stat($path, $flag) {
if (! preg_match ( '/^.*?://(.*)$/', $path, $matches )) {
Return false;
}
$tmp_file = self::$extract_dir . DIRECTORY_SEPARATOR . $matches [1];
if (file_exists ( $tmp_file )) {
if ($flag & STREAM_URL_STAT_LINK) {
Return lstat ( $tmp_file );
} else {
Return stat ( $tmp_file );
}
}
if ($flag & STREAM_URL_STAT_QUIET) {
$arr = array ('dev' => 0, 'ino' => 0, 'mode' => 0, 'nlink' => 0, 'uid' => 0, 'gid' => ; 0, 'rdev' => 0, 'size' => 0, 'atime' => 0, 'mtime' => 0, 'ctime' => 0, 'blksize' => 0 , 'blocks' => 0 );
Return array_merge ( array_values ( $arr ), $arr );
}
return false;
}
}
?>

The usage example code is as follows:

Copy code The code is as follows:

include_once 'AdodbZip.php';
$db = AdodbZip::init(NewADOConnection('mysqlt'));
echo $db->GetOne('SELECT NOW()');
?>

It’s also two steps.

1. Contains AdodbZip.php file

2. AdodbZip::init(...) function initializes the adodb connection class

I hope this article will be helpful to everyone’s PHP programming design.