這篇文章主要介紹了php中adodbzip類,以實例形式詳細講述了adodbzip類文件的實現(xiàn)方法與使用技巧,注釋中包含詳盡的功能說明,非常具有實用價值,需要的朋友可以參考下
代碼如下:
<?php /** * AdodbZip 1.1 * * 代碼示例: * include_once 'AdodbZip.php'; * $db = AdodbZip::init(NewADOConnection('mysql教程t')); * echo $db->GetOne('SELECT NOW()'); * * 流程說明: * 1. 如果$extract_dir里的Adodb程序文件存在,并且$zip_file不存在;則使用$extract_dir里的Adodb程序文件。 * 2. 如果$extract_dir里的Adodb程序文件存在,并且$zip_file存在;則比較修改時間,$extract_dir里的Adodb程序文件更新為較新的。 * 3. 如果$extract_dir里的Adodb程序文件不存在,并且$zip_file存在;則$extract_dir里的Adodb程序文件從$zip_file解壓獲得。 * 4. 如果 $extract_dir里的Adodb程序文件不存在,并且$zip_file不存在;則從$zip_url下載Adodb的Zip文件,并解壓Adodb的程序文件。 * 其他說明: * 1. $extract_dir可自定義。如果將Adodb的Zip包完全解壓到此目錄,則可忽略$zip_url和$zip_file設置項,這和傳統(tǒng)使用Adodb一樣。 * 2. $zip_file可自定義。如果$zip_file存在,則可忽略$zip_url,這樣可整站統(tǒng)一使用$zip_file。 * 3. $zip_url可自定義??呻S時修改Adodb版本,此時$zip_file和$extract_dir最好使用默認值,各版本互不干擾。 * 4. $server、$user、$pwd、$db可自定義。默認是mysql默認值,此項只有調用AdodbZip::init方法后才起效果。 * 5. $charset可自定義。默認不改變編碼,此項只有調用AdodbZip::init方法后才起效果。 * 6. AdodbZip::init方法里可增加Adodb初始化值。 */ /** * AdodbZip啟動項 */ // 設定參數(shù) AdodbZip::$zip_url = 'http://c.net教程works-kr-1.dl.sourceforge.net/project/adodb/adodb-php5-only/adodb-509-for-php5/adodb509.zip'; //[設置項]Adodb的Zip文件下載地址,文件比較大建議先下載或者解壓 AdodbZip::$zip_file = sys_get_temp_dir () . preg_replace ( '/^.*/(adodb.*?.zip)$/i', 'adodb/$1', AdodbZip::$zip_url ); //[設置項]Adodb的Zip文件緩存位置 AdodbZip::$entry_dir = 'adodb5'; AdodbZip::$extract_dir = sys_get_temp_dir () . 'adodb/' . AdodbZip::$entry_dir; //[設置項]Adodb程序文件緩存位置 AdodbZip::$server = 'localhost'; //[設置項]服務器 AdodbZip::$user = 'root'; //[設置項]用戶名 AdodbZip::$pwd = ''; //[設置項]密碼 AdodbZip::$db = 'test'; //[設置項]數(shù)據(jù)庫教程 AdodbZip::$charset = ''; //[設置項]編碼 // 注冊協(xié)議 if (! in_array ( 'AdodbZip', stream_get_wrappers () )) { stream_wrapper_register ( 'AdodbZip', 'AdodbZip' ); } // 定義常量 if (! defined ( 'ADODB_DIR' )) { define ( 'ADODB_DIR', 'AdodbZip:/' ); } // 包含程序 require_once (ADODB_DIR . '/adodb.inc.php'); // $db = AdodbZip::init(NewADOConnection('mysqlt')); // [選擇項]引用即定義$db // return AdodbZip::init(NewADOConnection('mysqlt')); // [選擇項]引用即返回$db,注意只可引用一次。 /** * AdodbZip類定義 */ class AdodbZip { /** * Adodb變量 */ 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變量 */ private $handle; public $context; /** * Adodb函數(shù)組 */ /** * init * @param adodb &$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函數(shù)組 */ /** * __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) { // 驗證文件地址 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; // 驗證程序文件 if (! file_exists ( $tmp_file ) || file_exists ( $zip_file ) && filectime ( $tmp_file ) < filectime ( $zip_file )) { // 下載文件 if (! file_exists ( $zip_file )) { // 目錄處理 if (! is_dir ( dirname ( self::$zip_file ) )) { if (mkdir ( dirname ( self::$zip_file ), 0777, true ) === false) { header ( 'Content-type: text/html;charset=utf-8' ); die ( '請創(chuàng)建目錄 ' . $zip_dir ); } } // 下載文件 if (! file_exists ( self::$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 ( '請下載文件 <a href="' . self::$zip_url . '">' . self::$zip_url . '.zip</a > 保存為 ' . self::$zip_file ); } } } // 創(chuàng)建目錄 $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 ( '請創(chuàng)建目錄 ' . $tmp_dir ); } } // 打開壓縮文件 $zip = zip_open ( $zip_file ); if (! is_resource ( $zip )) { return false; } // 尋找解壓文件 do { $entry = zip_read ( $zip ); if (! is_resource ( $entry )) { return false; } if (zip_entry_name ( $entry ) == $entry_file) { break; } } while ( true ); // 轉存壓縮文件 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 ); } // 打開文件 $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; } } ?>
使用實例代碼如下:
代碼如下:
<?php include_once 'AdodbZip.php'; $db = AdodbZip::init(NewADOConnection('mysqlt')); echo $db->GetOne('SELECT NOW()'); ?>
也是兩步
1. 包含AdodbZip.php文件
2. AdodbZip::init(...)函數(shù)對adodb連接類進行初始化
【相關教程推薦】
2. php從入門到精通??
3. bootstrap教程?

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

The method to get the current session ID in PHP is to use the session_id() function, but you must call session_start() to successfully obtain it. 1. Call session_start() to start the session; 2. Use session_id() to read the session ID and output a string similar to abc123def456ghi789; 3. If the return is empty, check whether session_start() is missing, whether the user accesses for the first time, or whether the session is destroyed; 4. The session ID can be used for logging, security verification and cross-request communication, but security needs to be paid attention to. Make sure that the session is correctly enabled and the ID can be obtained successfully.

To extract substrings from PHP strings, you can use the substr() function, which is syntax substr(string$string,int$start,?int$length=null), and if the length is not specified, it will be intercepted to the end; when processing multi-byte characters such as Chinese, you should use the mb_substr() function to avoid garbled code; if you need to intercept the string according to a specific separator, you can use exploit() or combine strpos() and substr() to implement it, such as extracting file name extensions or domain names.

UnittestinginPHPinvolvesverifyingindividualcodeunitslikefunctionsormethodstocatchbugsearlyandensurereliablerefactoring.1)SetupPHPUnitviaComposer,createatestdirectory,andconfigureautoloadandphpunit.xml.2)Writetestcasesfollowingthearrange-act-assertpat

In PHP, the most common method is to split the string into an array using the exploit() function. This function divides the string into multiple parts through the specified delimiter and returns an array. The syntax is exploit(separator, string, limit), where separator is the separator, string is the original string, and limit is an optional parameter to control the maximum number of segments. For example $str="apple,banana,orange";$arr=explode(",",$str); The result is ["apple","bana

JavaScript data types are divided into primitive types and reference types. Primitive types include string, number, boolean, null, undefined, and symbol. The values are immutable and copies are copied when assigning values, so they do not affect each other; reference types such as objects, arrays and functions store memory addresses, and variables pointing to the same object will affect each other. Typeof and instanceof can be used to determine types, but pay attention to the historical issues of typeofnull. Understanding these two types of differences can help write more stable and reliable code.

std::chrono is used in C to process time, including obtaining the current time, measuring execution time, operation time point and duration, and formatting analysis time. 1. Use std::chrono::system_clock::now() to obtain the current time, which can be converted into a readable string, but the system clock may not be monotonous; 2. Use std::chrono::steady_clock to measure the execution time to ensure monotony, and convert it into milliseconds, seconds and other units through duration_cast; 3. Time point (time_point) and duration (duration) can be interoperable, but attention should be paid to unit compatibility and clock epoch (epoch)

Use prepared statements in PHP mainly to prevent SQL injection attacks, improve performance, make the code clearer and easier to debug. 1. It effectively prevents SQL injection through parameterized queries, ensuring that user input is always processed as data rather than SQL logic; 2. Preprocessing statements only need to be compiled once when executed multiple times, significantly improving execution efficiency, especially suitable for batch operations; 3. Parameter binding supports position and named placeholders, separates SQL and data, and enhances code readability and maintenance; 4. Errors can be exposed in advance in the prepare stage, and exceptions can be handled uniformly by setting error mode, which helps to quickly debug.

ToaccessenvironmentvariablesinPHP,usegetenv()orthe$_ENVsuperglobal.1.getenv('VAR_NAME')retrievesaspecificvariable.2.$_ENV['VAR_NAME']accessesvariablesifvariables_orderinphp.iniincludes"E".SetvariablesviaCLIwithVAR=valuephpscript.php,inApach
