


PHP photo album function implementation includes PHP image upload, background management, browsing and deletion tutorial examples
The photo album function implementation (including PHP image upload, background management, browsing and deletion) tutorial example includes five parts:
1. Album homepage
<meta charset="utf-8"> <title>相册首页</title> <style><span> body{ width:<span>800px; margin:0<span> auto; test-align:<span>center; } </style> <h1 id="The-simple-photo-album">The simple photo album.</h1> <center> <span>php </span><span>error_reporting</span>(0<span>); </span><span>if</span>(!<span>$_GET</span>["page"<span>]){ </span><span>$page</span> = 1<span>; }</span><span>else</span><span>$page</span> = <span>$_GET</span>["page"<span>]; </span><span>$filename</span> = "data.dat"<span>; </span><span>$myfile</span> = <span>file</span>(<span>$filename</span><span>); </span><span>$z</span> = <span>$myfile</span>[0<span>]; </span><span>if</span>(<span>$z</span> == <span>NULL</span><span>){ </span><span>echo</span> "目前记录条数为:0"<span>; }</span><span>else</span><span>{ </span><span>$temp</span> = <span>explode</span>("||",<span>$myfile</span>[0<span>]); </span><span>echo</span> "共有".<span>$temp</span>[0]."条内容"<span>; </span><span>echo</span> " "<span>; </span><span>$p_count</span> = <span>ceil</span>(<span>$temp</span>[0]/8<span>); </span><span>echo</span> "分".<span>$_count</span>."页显示"<span>; </span><span>echo</span> " "<span>; </span><span>echo</span> "当前显示第".<span>$page</span>."页"<span>; </span><span>echo</span> " "<span>; </span><span>echo</span> "<br>"<span>; </span><span>if</span>(<span>$page</span> != <span>ceil</span>(<span>$temp</span>[0]/8<span>)){ </span><span>$current_size</span> = 8<span>; }</span><span>else</span><span>{ </span><span>$current_size</span> = <span>$temp</span>[0]%8<span>; } </span><span>if</span>(<span>$current_size</span> == 0<span>){ </span><span>$current_size</span> = 8<span>; } </span><span>for</span>(<span>$i</span>=0;<span>$i</span>ceil(<span>$current_size</span>/4);<span>$i</span>++<span>){ </span><span>for</span>(<span>$j</span>=0;<span>$j</span>$j++<span>){ </span><span>$temp</span> = <span>explode</span>("||", <span>$myfile</span>[<span>$i</span>*4+<span>$j</span>+(<span>$page</span>-1)*8<span>]); </span><span>if</span>((<span>$i</span>*4+<span>$j</span>+(<span>$page</span>-1)*8)$z<span>){ </span><span>$imgfile</span> = "./images/".<span>$temp</span>[1<span>]; </span><span>$flag</span> = <span>getimagesize</span>(<span>$imgfile</span><span>); </span><span>echo</span> "<a href="viewimage.php?id=%22.<span">$temp[0]."><img src="/test/images/%22.<span" alt="PHP photo album function implementation includes PHP image upload, background management, browsing and deletion tutorial examples" >$temp[1<span>]; </span><span>if</span>(<span>$flag</span>[0]>180||<span>$flag</span>[1]>100<span>){ </span><span>echo</span> " width=180 height=".<span>ceil</span>(<span>$flag</span>[1]*180/<span>$flag</span>[0<span>]); } </span><span>echo</span> " border=\"0\"></a>"<span>; }</span><span>else</span><span>{ </span><span>echo</span> ""<span>; } } } </span><span>echo</span> ""<span>; } </span><span>echo</span> "<p>"<span>; </span><span>$prev_page</span> = <span>$page</span> - 1<span>; </span><span>$next_page</span> = <span>$page</span> + 1<span>; </span><span>if</span>(<span>$page</span> ){ <span>echo</span> "第一页 | "<span>; }</span><span>else</span><span>{ </span><span>echo</span> "<a href="<span>%24PATH_INFO</span>?page=1">第一页</a> | "<span>; } </span><span>if</span>(<span>$prev_page</span> ){ <span>echo</span> "上一页 | "<span>; }</span><span>else</span><span>{ </span><span>echo</span> "<a href="<span>%24PATH_INFO</span>?page=<span>%24prev_page</span>">上一页</a> | "<span>; } </span><span>if</span>(<span>$next_page</span> > <span>$p_count</span><span>){ </span><span>echo</span> "下一页 | "<span>; }</span><span>else</span><span>{ </span><span>echo</span> "<a href="<span>%24PATH_INFO</span>?page=<span>%24next_page</span>">下一页</a> | "<span>; } </span><span>if</span>(<span>$page</span> >= <span>$p_count</span><span>){ </span><span>echo</span> "最后一页</p>\n"<span>; }</span><span>else</span><span>{ </span><span>echo</span> "<a href="<span>%24PATH_INFO</span>?page=<span>%24p_count</span>">最后一页</a>\n"<span>; } </span>?> </center> <a href="upfile.php">Upload Files</a>
2. Background management
<meta charset="utf-8"> <title>后台处理页面</title> <span>php </span><span>error_reporting</span>(1<span>); </span><span>if</span>(<span>$_FILES</span>['upfile']['name'] == <span>NULL</span><span>){ </span><span>echo</span> "No file choice."<span>; </span><span>echo</span> "<a href="upfile.php">返回</a>"<span>; }</span><span>else</span><span>{ </span><span>$filepath</span> = "/Library/WebServer/Documents/test/images/"<span>; </span><span>$tmp_name</span> = <span>$_FILES</span>['upfile']['tmp_name'<span>]; </span><span>$filename</span> = <span>$filepath</span>.<span>$_FILES</span>['upfile']['name'<span>]; </span><span>//</span><span> echo $filename;</span><span>if</span>(<span>move_uploaded_file</span>(<span>$tmp_name</span>,<span>$filename</span><span>)){ </span><span>$dataname</span> = "data.dat"<span>; </span><span>$myfile</span> = <span>file</span>(<span>$dataname</span><span>); </span><span>if</span>(<span>$myfile</span>[0] == ""<span>){ </span><span>$fp</span> = <span>fopen</span>(<span>$dataname</span>, "a+"<span>); </span><span>fwrite</span>(<span>$fp</span>,"1||".<span>$_FILES</span>['upfile']['name']."||".<span>$_POST</span>["content"]."||".<span>date</span>(Y年m月d日)."\n"<span>); </span><span>fclose</span>(<span>$fp</span><span>); }</span><span>else</span><span>{ </span><span>$temp</span> = <span>explode</span>("||", <span>$myfile</span>[0<span>]); </span><span>$temp</span>[0]++<span>; </span><span>$fp</span> = <span>fopen</span>(<span>$dataname</span>, "r"<span>); </span><span>$line_has</span> = <span>fread</span>(<span>$fp</span>,<span>filesize</span>("<span>$dataname</span>"<span>)); </span><span>fclose</span>(<span>$fp</span><span>); </span><span>$fp</span> = <span>fopen</span>(<span>$dataname</span>, "w"<span>); </span><span>fwrite</span>(<span>$fp</span>,<span>$temp</span>[0]."||".<span>$_FILES</span>['upfile']['name']."||".<span>$_POST</span>["content"]."||".<span>date</span>("Y年m月d日")."\n"<span>); </span><span>fwrite</span>(<span>$fp</span>,"<span>$line_has</span>"<span>); </span><span>fclose</span>(<span>$fp</span><span>); } </span><span>echo</span> "<p></p>"<span>; </span><span>echo</span> "指定文件已经上传成功!"<span>; </span><span>echo</span> "<p></p>"<span>; </span><span>echo</span> "点<a href="index.php">返回</a>"<span>; }</span><span>else</span><span>{ </span><span>echo</span> "文件上传失败!"<span>; } } </span>?>
3. Picture upload
<meta charset="utf-8"> <title>相册上传页面</title> <script language="javascript"> <span>function<span> Juge(theForm){ <span>if(theForm.upfile.value==""<span>){ alert("Please choice file!"<span>); theForm.upfile.<span>focus(); <span>return (<span>false<span>); } <span>if(theForm.content.value==""<span>){ alert("Please input image information!"<span>); theForm.content.<span>focus(); <span>return (<span>false<span>); } <span>if(theForm.content.value.length>60<span>){ alert("The information must less than 60 chars."<span>); theForm.content.<span>focus(); <span>return (<span>false<span>); } } </script> <center> <h1 id="Image-album-upload-page">Image album upload page</h1> <p> <a href="index.php">返回首页</a> </p> <table border="1"> <form enctype="multipart/form-data" action="system.php" method="post" type="file"> <tr> <td>输入说明:</td> <td> <input name="content" type="text">(*限30字)</td> </tr> <tr> <td colspan="2"> <center> <input type="submit" value="提交"> <input type="reset" value="重置"> </center> </td> </tr> </form> </table> </center>
4. Picture browsing
<meta charset="utf-8"> <title>查看图片</title> <center> <h1 id="View-images">View images.</h1> <span>php </span><span>error_reporting</span>(0<span>); </span><span>if</span>(!<span>$_GET</span>["id"<span>]){ </span><span>echo</span> "No assign id."<span>; </span><span>echo</span> "<a href="index.php">首页</a>"<span>; </span><span>exit</span><span>(); }</span><span>else</span><span>{ </span>?> <a href="index.php">返回首页</a> &<span>nbsp; </span><a href="delimage.php?id=<?php%20echo%20<span>%24_GET</span>%5B'id'%5D%20?>">删除图片</a><br> <span>php </span><span>$id</span> = <span>$_GET</span>["id"<span>]; </span><span>$filename</span> = "data.dat"<span>; </span><span>$myfile</span> = <span>file</span>(<span>$filename</span><span>); </span><span>$z</span> = <span>$myfile</span>[0<span>]; </span><span>if</span>(<span>$z</span> == ""<span>){ </span><span>echo</span> "目前记录条数为0"<span>; }</span><span>else</span><span>{ </span><span>$temp</span> = <span>explode</span>("||", <span>$myfile</span>[<span>$z</span>-<span>$id</span><span>]); </span><span>echo</span> "<p>"."文件名:".<span>$temp</span>[1]."</p>"<span>; </span><span>echo</span> "<p><img src="/test/images/%22.<span" alt="PHP photo album function implementation includes PHP image upload, background management, browsing and deletion tutorial examples" >$temp[1]."></p>"<span>; </span><span>echo</span> "<p>图片简介:".<span>$temp</span>[2]."</p>"<span>; </span><span>echo</span> "<p>上传日期:".<span>$temp</span>[3]."</p>"<span>; } } </span>?> </center>
5. Delete pictures
<meta charset="utf-8"> <title>删除图片</title> <span>php </span><span>error_reporting</span>(0<span>); </span><span>if</span>(!<span>$_GET</span>["id"<span>]){ </span><span>echo</span> "No id assign."<span>; </span><span>echo</span> "<br>"<span>; </span><span>echo</span> "<a href="index.php">首页</a>"<span>; </span><span>exit</span><span>(); }</span><span>else</span><span>{ </span><span>$id</span> = <span>$_GET</span>["id"<span>]; </span><span>$filename</span> = "data.dat"<span>; </span><span>$myfile</span> = <span>file</span>(<span>$filename</span><span>); </span><span>$z</span> = <span>$myfile</span>[0<span>]; </span><span>if</span>(<span>$z</span> == <span>NULL</span><span>){ </span><span>echo</span> "目前记录条数为:0"<span>; }</span><span>else</span><span>{ </span><span>$temp</span> = <span>explode</span>("||", <span>$myfile</span>[<span>$z</span>-<span>$id</span><span>]); </span><span>print_r</span>(<span>$temp</span><span>); </span><span>$filepath</span> = "/Library/WebServer/Documents/test/images/"<span>; </span><span>$imgfile</span> = <span>$filepath</span>.<span>$temp</span>[1<span>]; </span><span>echo</span><span>$imgfile</span><span>; </span><span>unlink</span>(<span>$imgfile</span><span>); </span><span>for</span>(<span>$i</span>=0;<span>$i</span>$z-<span>$id</span>);<span>$i</span>++<span>){ </span><span>$temp2</span> = <span>explode</span>("||", <span>$myfile</span>[<span>$i</span><span>]); </span><span>$temp2</span>[0]--<span>; </span><span>if</span>(<span>$temp2</span>[0]>0<span>) </span><span>$text2</span> = <span>$text2</span>.<span>$temp2</span>[0]."||".<span>$temp2</span>[1]."||".<span>$temp2</span>[2]."||".<span>$temp2</span>[3<span>]; } </span><span>for</span>(<span>$i</span>=(<span>$z</span>-<span>$id</span>+1);<span>$i</span>$z;<span>$i</span>++<span>){ </span><span>$text1</span> = <span>$text1</span>.<span>$myfile</span>[<span>$i</span><span>]; } </span><span>$fp</span> = <span>fopen</span>(<span>$filename</span>, "w"<span>); </span><span>fwrite</span>(<span>$fp</span>, <span>$text2</span><span>); </span><span>fwrite</span>(<span>$fp</span>, <span>$text1</span><span>); </span><span>fclose</span>(<span>$fp</span><span>); </span><span>echo</span> "指定文件已经删除成功!"<span>; </span><span>echo</span> "<a href="index.php">首页</a>"<span>; } } </span>?>
The above has introduced the implementation of the PHP photo album function, including PHP image uploading, background management, browsing and deletion tutorial examples, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.

PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.

Tostoreauser'snameinaPHPsession,startthesessionwithsession_start(),thenassignthenameto$_SESSION['username'].1)Usesession_start()toinitializethesession.2)Assigntheuser'snameto$_SESSION['username'].Thisallowsyoutoaccessthenameacrossmultiplepages,enhanc

Reasons for PHPSession failure include configuration errors, cookie issues, and session expiration. 1. Configuration error: Check and set the correct session.save_path. 2.Cookie problem: Make sure the cookie is set correctly. 3.Session expires: Adjust session.gc_maxlifetime value to extend session time.

Methods to debug session problems in PHP include: 1. Check whether the session is started correctly; 2. Verify the delivery of the session ID; 3. Check the storage and reading of session data; 4. Check the server configuration. By outputting session ID and data, viewing session file content, etc., you can effectively diagnose and solve session-related problems.

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

Configuring the session lifecycle in PHP can be achieved by setting session.gc_maxlifetime and session.cookie_lifetime. 1) session.gc_maxlifetime controls the survival time of server-side session data, 2) session.cookie_lifetime controls the life cycle of client cookies. When set to 0, the cookie expires when the browser is closed.


Hot AI Tools

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

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

Undress AI Tool
Undress images for free

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

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

WebStorm Mac version
Useful JavaScript development tools

Atom editor mac version download
The most popular open source editor

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
