IT. Expert System.

PHP

Examples


Examples

See also the examples under rar:// wrapper.

Example #1 On-the-fly decompression

<?php

if (!array_key_exists("i"$_GET) || !is_numeric($_GET["i"]))
    die(
"Index unspecified or non-numeric");
$index = (int) $_GET["i"];
    
$arch RarArchive::open("example.rar");
if (
$arch === FALSE)
    die(
"Cannot open example.rar");

$entries $arch->getEntries();
if (
$entries === FALSE)
    die(
"Cannot retrieve entries");

if (!
array_key_exists($index$entries))
    die(
"No such index: $index");

$orfilename $entries[$index]->getName(); //UTF-8 encoded

$filesize $entries[$index]->getUnpackedSize();

/* you could check HTTP_IF_MODIFIED_SINCE here and compare with
 * $entries[$index]->getFileTime(). You could also send a
 * "Last modified" header */

$fp $entries[$index]->getStream();
if (
$fp === FALSE)
    die(
"Cannot open file with index $index insided the archive.");

$arch->close(); //no longer needed; stream is independent

function detectUserAgent() {
    if (!
array_key_exists('HTTP_USER_AGENT'$_SERVER))
        return 
"Other";
    
    
$uas $_SERVER['HTTP_USER_AGENT'];
    if (
preg_match("@Opera/@"$uas))
        return 
"Opera";
    if (
preg_match("@Firefox/@"$uas))
        return 
"Firefox";
    if (
preg_match("@Chrome/@"$uas))
        return 
"Chrome";
    if (
preg_match("@MSIE ([0-9.]+);@"$uas$matches)) {
        if (((float)
$matches[1]) >= 7.0)
            return 
"IE";
    }
    
    return 
"Other";
}

/*
 * We have 3 options:
 * - For FF and Opera, which support RFC 2231, use that format.
 * - For IE and Chrome, use attwithfnrawpctenclong
 *   (http://greenbytes.de/tech/tc2231/#attwithfnrawpctenclong)
 * - For the others, convert to ISO-8859-1, if possible
 */
$formatRFC2231 'Content-Disposition: attachment; filename*=UTF-8\'\'%s';
$formatDef 'Content-Disposition: attachment; filename="%s"';

switch (
detectUserAgent()) {
    case 
"Opera":
    case 
"Firefox":
        
$orfilename rawurlencode($orfilename);
        
$format $formatRFC2231;
        break;

    case 
"IE":
    case 
"Chrome":
        
$orfilename rawurlencode($orfilename);
        
$format $formatDef;
        break;
    default:
        if (
function_exists('iconv'))
            
$orfilename =
                @
iconv("UTF-8""ISO-8859-1//TRANSLIT"$orfilename);
        
$format $formatDef;
}

header(sprintf($format$orfilename));
//cannot send error messages from now on (headers already sent)

//replace by real content type, perhaps infering from the file extension
$contentType "application/octet-stream";
header("Content-Type: $contentType");

header("Content-Transfer-Encoding: binary");

header("Content-Length: $filesize");

if (
$_SERVER['REQUEST_METHOD'] == "HEAD")
    die();
    
while (!
feof($fp)) {
    
$s = @fread($fp8192);
    if (
$s === false)
        break; 
//useless to send error messages
  
    
echo $s;
}
?>

This example opens a RAR file and presents the requested file inside the RAR archive for download to the client.

Example #2 RAR extension filesystem extraction example

<?php

$rar_file 
rar_open('example.rar') or die("Can't open Rar archive");

$entries rar_list($rar_file);

foreach (
$entries as $entry) {
    echo 
'Filename: ' $entry->getName() . "\n";
    echo 
'Packed size: ' $entry->getPackedSize() . "\n";
    echo 
'Unpacked size: ' $entry->getUnpackedSize() . "\n";

    
$entry->extract('/dir/extract/to/');
}

rar_close($rar_file);

?>

This example opens a RAR file archive and extracts each entry to the specified directory.



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 194 / 158679547. Delta: 0.00617 с