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Тема в разделе "PHP для новичков", создана пользователем svkarasev, 13 фев 2018.

  1. svkarasev

    svkarasev Активный пользователь

    С нами с:
    4 ноя 2011
    Сообщения:
    43
    Симпатии:
    1
    Все привет
    Нашел интересный PHP скрипт, который меняет картинку. Я задал его для смены фона страницы, но вот вопрос, этот скрипт меняет картинку после обновления страницы через минуту-две, как сделать чтобы менялась при каждом обновлении страницы?
    Вот код:
    Код (Text):
    1. <?php
    2.  
    3. /*
    4.  
    5.     AUTOMATIC IMAGE ROTATOR
    6.     Version 2.2 - December 4, 2003
    7.     Copyright (c) 2002-2003 Dan P. Benjamin, Automatic, Ltd.
    8.     All Rights Reserved.
    9.  
    10.     http://www.hiveware.com/imagerotator.php
    11.    
    12.     http://www.automaticlabs.com/
    13.    
    14.    
    15.     DISCLAIMER
    16.     Automatic, Ltd. makes no representations or warranties about
    17.     the suitability of the software, either express or
    18.     implied, including but not limited to the implied
    19.     warranties of merchantability, fitness for a particular
    20.     purpose, or non-infringement. Dan P. Benjamin and Automatic, Ltd.
    21.     shall not be liable for any damages suffered by licensee
    22.     as a result of using, modifying or distributing this
    23.     software or its derivatives.
    24.    
    25.    
    26.     ABOUT
    27.     This PHP script will randomly select an image file from a
    28.     folder of images on your webserver.  You can then link to it
    29.     as you would any standard image file and you'll see a random
    30.     image each time you reload.
    31.    
    32.     When you want to add or remove images from the rotation-pool,
    33.     just add or remove them from the image rotation folder.
    34.  
    35.  
    36.     VERSION CHANGES
    37.     Version 1.0
    38.         - Release version
    39.    
    40.     Version 1.5
    41.         - Tweaked a few boring bugs
    42.    
    43.     Version 2.0
    44.         - Complete rewrite from the ground-up
    45.         - Made it clearer where to make modifications
    46.         - Made it easier to specify/change the rotation-folder
    47.         - Made it easier to specify/change supported image types
    48.         - Wrote better instructions and info (you're them reading now)
    49.         - Significant speed improvements
    50.         - More error checking
    51.         - Cleaner code (albeit more PHP-specific)
    52.         - Better/faster random number generation and file-type parsing
    53.         - Added a feature where the image to display can be specified
    54.         - Added a cool feature where, if an error occurs (such as no
    55.           images being found in the specified folder) *and* you're
    56.           lucky enough to have the GD libraries compiled into PHP on
    57.           your webserver, we generate a replacement "error image" on
    58.           the fly.
    59.        
    60.     Version 2.1
    61.         - Updated a potential security flaw when value-matching
    62.           filenames
    63.  
    64.     Version 2.2
    65.         - Updated a few more potential security issues
    66.         - Optimized the code a bit.
    67.         - Expanded the doc for adding new mime/image types.
    68.  
    69.         Thanks to faithful ALA reader Justin Greer for
    70.         lots of good tips and solid code contribution!
    71.  
    72.  
    73.     INSTRUCTIONS
    74.     1. Modify the $folder setting in the configuration section below.
    75.     2. Add image types if needed (most users can ignore that part).
    76.     3. Upload this file (rotate.php) to your webserver.  I recommend
    77.        uploading it to the same folder as your images.
    78.     4. Link to the file as you would any normal image file, like this:
    79.  
    80.             <img src="http://example.com/rotate.php">
    81.  
    82.     5. You can also specify the image to display like this:
    83.  
    84.             <img src="http://example.com/rotate.php?img=gorilla.jpg">
    85.        
    86.         This would specify that an image named "gorilla.jpg" located
    87.         in the image-rotation folder should be displayed.
    88.    
    89.     That's it, you're done.
    90.  
    91. */
    92.  
    93.  
    94.  
    95.  
    96. /* ------------------------- CONFIGURATION -----------------------
    97.  
    98.  
    99.     Set $folder to the full path to the location of your images.
    100.     For example: $folder = '/user/me/example.com/images/';
    101.     If the rotate.php file will be in the same folder as your
    102.     images then you should leave it set to $folder = '.';
    103.  
    104. */
    105.  
    106.  
    107.     $folder = 'login-background/';
    108.  
    109.  
    110. /*  
    111.  
    112.     Most users can safely ignore this part.  If you're a programmer,
    113.     keep reading, if not, you're done.  Go get some coffee.
    114.  
    115.     If you'd like to enable additional image types other than
    116.     gif, jpg, and png, add a duplicate line to the section below
    117.     for the new image type.
    118.    
    119.     Add the new file-type, single-quoted, inside brackets.
    120.    
    121.     Add the mime-type to be sent to the browser, also single-quoted,
    122.     after the equal sign.
    123.    
    124.     For example:
    125.    
    126.     PDF Files:
    127.  
    128.         $extList['pdf'] = 'application/pdf';
    129.    
    130.     CSS Files:
    131.  
    132.         $extList['css'] = 'text/css';
    133.  
    134.     You can even serve up random HTML files:
    135.  
    136.         $extList['html'] = 'text/html';
    137.         $extList['htm'] = 'text/html';
    138.  
    139.     Just be sure your mime-type definition is correct!
    140.  
    141. */
    142.  
    143.     $extList = array();
    144.     $extList['gif'] = 'image/gif';
    145.     $extList['jpg'] = 'image/jpeg';
    146.     $extList['jpeg'] = 'image/jpeg';
    147.     $extList['png'] = 'image/png';
    148.    
    149.  
    150. // You don't need to edit anything after this point.
    151.  
    152.  
    153. // --------------------- END CONFIGURATION -----------------------
    154.  
    155. $img = null;
    156.  
    157. if (substr($folder,-1) != '/') {
    158.     $folder = $folder.'/';
    159. }
    160.  
    161. if (isset($_GET['img'])) {
    162.     $imageInfo = pathinfo($_GET['img']);
    163.     if (
    164.         isset( $extList[ strtolower( $imageInfo['extension'] ) ] ) &&
    165.         file_exists( $folder.$imageInfo['basename'] )
    166.     ) {
    167.         $img = $folder.$imageInfo['basename'];
    168.     }
    169. } else {
    170.     $fileList = array();
    171.     $handle = opendir($folder);
    172.     while ( false !== ( $file = readdir($handle) ) ) {
    173.         $file_info = pathinfo($file);
    174.         if (
    175.             isset( $extList[ strtolower( $file_info['extension'] ) ] )
    176.         ) {
    177.             $fileList[] = $file;
    178.         }
    179.     }
    180.     closedir($handle);
    181.  
    182.     if (count($fileList) > 0) {
    183.         $imageNumber = time() % count($fileList);
    184.         $img = $folder.$fileList[$imageNumber];
    185.     }
    186. }
    187.  
    188. if ($img!=null) {
    189.     $imageInfo = pathinfo($img);
    190.     $contentType = 'Content-type: '.$extList[ $imageInfo['extension'] ];
    191.     header ($contentType);
    192.     readfile($img);
    193. } else {
    194.     if ( function_exists('imagecreate') ) {
    195.         header ("Content-type: image/png");
    196.         $im = @imagecreate (100, 100)
    197.             or die ("Cannot initialize new GD image stream");
    198.         $background_color = imagecolorallocate ($im, 255, 255, 255);
    199.         $text_color = imagecolorallocate ($im, 0,0,0);
    200.         imagestring ($im, 2, 5, 5,  "IMAGE ERROR", $text_color);
    201.         imagepng ($im);
    202.         imagedestroy($im);
    203.     }
    204. }
    205.  
    206. ?>
    Заранее спасибо огромное =)
     
  2. valentinnew

    valentinnew Активный пользователь

    С нами с:
    30 янв 2011
    Сообщения:
    136
    Симпатии:
    21
    При беглом осмотре, судя по 183ей строке, картинка меняется раз в секунду.
    А код - отстой...
    Ещё бы...2003ий год
     
  3. westsergius

    westsergius Новичок

    С нами с:
    24 янв 2018
    Сообщения:
    13
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    1
    Может из-за кеша проблема?
     
    valentinnew нравится это.
  4. svkarasev

    svkarasev Активный пользователь

    С нами с:
    4 ноя 2011
    Сообщения:
    43
    Симпатии:
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    Я подумал и решил сделать так background: url('url<?php $a=array('1.jpg','2.jpg','3.jpg','4.jpg','5.jpg','6.jpg','7.jpg','8.jpg','9.jpg','10.jpg','11.jpg','12.jpg','13.jpg','14.jpg','15.jpg','16.jpg','17.jpg','18.jpg','19.jpg',); echo $a[array_rand($a)]; ?>') no-repeat center top;