下面这段是PHP5.6，如何改成PHP8.4? <?php require_once("include/global.php"); ?> <html> <head> <?php echo getMeta('gb') ?> <title><?php echo $_GLOBAL_CONF['SITE_NAME'] ?></title> </head> <link rel="stylesheet" href="/common.css" type="text/css"> <style> a {color:#616651} .img1 {border:solid 0 black} </style> <BODY link=#cc0000 leftMargin=0 topMargin=0 marginwidth="0" marginheight="0"> <?php require_once("include/header.php"); ?> <?php /* <div id=ad_dl01 style="z-index:1; visibility:visible; width:100px; position:absolute; top:115px; right:5px;"> <table border=0 cellspacing=0 cellpadding=0 width=300 style="table-layout:fixed; word-break:break-all" bgcolor=#d3e9FF> <tr> <td><iframe width="300" height="200" style="border: solid 1px black; width: 600px; height: 30px;" frameborder="0"></iframe></td> </tr> </table> </div> <script type=text/javascript> var step_ratio = 0.1; objs = new Array(); objs_x = new Array(); objs_y = new Array(); function addfollowmark(name, x, y) { i = objs.length; objs[i] = document.getElementById(name); objs_x[i] = x; objs_y[i] = y; } function followmark() { for(var i=0; i<objs.length; i++) { var fm = objs[i]; var fm_x = typeof(objs_x[i]) == 'string' ? eval(objs_x[i]) : objs_x[i]; var fm_y = typeof(objs_y[i]) == 'string' ? eval(objs_y[i]) : objs_y[i]; if (fm.offsetLeft != document.body.scrollLeft + fm_x) { var dx = (document.body.scrollLeft + fm_x - fm.offsetLeft) * step_ratio; dx = (dx > 0 ? 1 : -1) * Math.ceil(Math.abs(dx)); fm.style.left = fm.offsetLeft + dx; } if (fm.offsetTop != document.body.scrollTop + fm_y) { var dy = (document.body.scrollTop + fm_y - fm.offsetTop) * step_ratio; dy = (dy > 0 ? 1 : -1) * Math.ceil(Math.abs(dy)); fm.style.top = fm.offsetTop + dy; } fm.style.display = ''; } } addfollowmark("ad_dl01", "document.body.clientWidth-305", 115); setInterval('followmark()',20); </script> / ?> <center> <table width=95% border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="2"><img src="images/tb_left.jpg" width="2" height="28" /></td> <td background="images/tb_bg.jpg"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <?php if($_SESSION['ss_admin']>0) echo " <form name=loginform method=post action=/login.php> <input type=hidden name=username value='$ss_name'> <input type=hidden name=password value='$ss_password'> "; ?> <tr> <td width="9"> </td> <td width=111><table border="0" cellspacing="0" cellpadding="0"> <tr> <td width="2"><img src="images/tb_sel_left.jpg" width="2" height="28" /></td> <td width="124" align="center" background="images/tb_sel_bg.jpg" class="selmenu">首页 Home</td> <td width="4"><img src="images/tb_sel_right.jpg" width="4" height="28" /></td> </tr> </table></td> <td align="center"><a href=/https/wenku.csdn.net/search.php class="menu">产品 Products</a></td> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/newest class="menu">新产品 New Products</a></td> <td align="center"><span class="bai">|</span></td> <?php / <td align="center"><a href=/https/wenku.csdn.net/cart.php class="menu">Order</a></td> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/guestbook class="menu">Guestbook</a></td> <td align="center"><span class="bai">|</span></td>/ ?> <td align="center"><a href=/https/wenku.csdn.net/help/about.php class="menu">联系我们 Contact us</a></td> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/register class="menu">注册 Register</a></td> <?php if($_SESSION['ss_admin']>0){ ?> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/admin class="menu" target=_blank>Admin</a> <input type=submit value=ReLogin style=cursor:hand></td> <?php } ?> <?php if($_SESSION['ss_userid']>0){ ?> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/bill class="menu">Bills</a></td> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/logout.php class="menu">退出 Logout</a></td> <?php }else{ ?> <td align="center"><span class="bai">|</span></td> <td align="center"><a href=/https/wenku.csdn.net/login.php class="menu">登录 Login</a></td> <?php } ?> </tr> <?php if($_SESSION['ss_admin']>0) echo " </form> "; ?> </table></td> <td width="2"><img src="images/tb_right.jpg" width="2" height="28" /></td> </tr> </table></td> </tr> <tr> <td><table width="100%" border="0" cellspacing="0" cellpadding="0"> <form name=searchform action=search.php method=post> <tr> <td width="6"><img src="images/tb_bt_left.jpg" width="6" height="62" /></td> <td background="images/tb_bt_bg.jpg"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="266" align="center" valign="top" class="vd" style="font-size:11px;color:#333333"></td> <td height="58" align="center"><select name=key> <option value=model_no <? if($key == "model_no") echo "selected"; ?>>型号 Model No.</option> <option value=name <? if($key == "name") echo "selected"; ?>>名称 Name</option> <option value=features <? if($key == "features") echo "selected"; ?>>规格 Features</option> <option value=description <? if($key == "description") echo "selected"; ?>>说明 Descriptions</option> <option value=fob_port <? if($key == "fob_port") echo "selected"; ?>>港口 Fob Port</option> <option value=color <? if($key == "color") echo "selected"; ?>>颜色 Color</option> <option value=matial <? if($key == "matial") echo "selected"; ?>>材料 Matial</option> </select> 关键词 Keyword:<input type=text size=5 name=value value="<?php echo $value?>"> 产品号 ProductID:<input type=text size=5 name=productid value="<?php echo $productid?>"> <input type=hidden name=typeid value="<?php echo $typeid?>"> <input type=submit name=sub6 value="查找 Search"></td> </tr> </table></td> <td width="7"><img src="images/tb_bt_right.jpg" width="7" height="62" /></td> </tr> </form> </table></td> </tr> </table> <table width=95% border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td valign="top" width=350><table width="100%" height="160" border="0" cellpadding="1" cellspacing="1" bgcolor="#F3F1E7"> <tr> <td valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellspacing="0" cellpadding=5> <tr> <td height="22" align="left" bgcolor="#E7E4D2"></td> </tr> <tr> <td height="350" align="left" class="vd"><FONT style=font-size:14px;color:#000000;line-height:22px><?php include "include/html/notice1.html";?><FONT></td> </tr> <tr> <td height="1" bgcolor="#f5f5f5"></td></tr> <tr> <td height="20" align="right"><a href=/https/wenku.csdn.net/help/about.php class="blue" target=_blank>联系我们 Contact Us</a>   |   <a href=/https/wenku.csdn.net/help/about.php class="blue" target=_blank>更多 More</a>   </td> </tr> </table></td> </tr> </table></td> <td width="5"> </td> <td> <table cellspacing=0 cellpadding=0 align="center" bgcolor=#ffffff> <tr><td align=center> <?php / <font style=font-size:5px><br></font><table border=0 cellspacing=0 cellpadding=0> <tr> <td align=center width=311><img src=images/100001.jpg class=img1><font style=font-size:5px><br><br></font></td> <td bgcolor=#c1c69d width=1></td> <td align=center width=311><table cellspacing=0 cellpadding=0 align="center"> <tr align=center> <td colspan=2 height=5></td> </tr> <tr align=center> <td><a href=search.php?typeid=1001000><img src=images/200001.jpg alt="Molding Case" class=img1></a></td> <td><a href=search.php?typeid=1002000><img src=images/200002.jpg alt="Assembled Case" class=img1></a></td> </tr> <tr align=center> <td><a href=search.php?typeid=1003000><img src=images/200003.jpg alt="Instrument Box" class=img1></a></td> <td><a href=search.php?typeid=1004000><img src=images/200004.jpg alt="Aluminum Box" class=img1></a></td> </tr> </table><font style=font-size:2px><br><br></font></td> </tr> <tr> <td bgcolor=#c1c69d colspan=3></td> </tr> <tr> <td align=center><font style=font-size:5px><br></font><table cellspacing=0 cellpadding=0 align="center"> <tr align=center> <td><a href=search.php?typeid=2001000><img src=images/300001.jpg alt="Premium Bag" class=img1></a></td> <td><a href=search.php?typeid=2002000><img src=images/300002.jpg alt="Casual Bags" class=img1></a></td> </tr> </table></td> <td bgcolor=#c1c69d width=1></td> <td align=center><font style=font-size:5px><br></font><table cellspacing=0 cellpadding=0 align="center"> <tr align=center> <td><a href=search.php?typeid=3001000><img src=images/400001.jpg alt="Solid Wood Item" class=img1></a></td> <td><a href=search.php?typeid=3002000><img src=images/400002.jpg alt="Gift Item" class=img1></a></td> </tr> </table></td> </tr> </table><font style=font-size:5px><br></font>*/?> <a href=search.php><img src=images/01.jpg alt="Enter Please" class=img1 width=600></a> </td></tr> </table> </td> </tr> </table> <table border=0 cellpadding=0 cellspacing=0><form method=POST action=n2e.php target=frame1> <tr><td valign=middle>数字 Num<input type=text SIZE=16 name=id><INPUT TYPE=submit VALUE="英语 EN" NAME=s></td> <td><IFRAME name=frame1 frameBorder=1 width=780 scrolling=no height=26></IFRAME></td></tr></form> </table> <table border=0 cellpadding=0 cellspacing=0><form method=POST action=n2c.php target=frame2> <tr><td valign=middle>数字 Num<input type=text SIZE=16 name=id><INPUT TYPE=submit VALUE="中文 CN" NAME=s></td> <td><IFRAME name=frame2 frameBorder=1 width=780 scrolling=no height=26></IFRAME></td></tr></form> </table> <?php require_once("include/foot.php"); ?> </center> </body> </html>

时间: 2025-06-10 14:13:41 浏览: 12

<think>我们正在将一段PHP5.6的代码迁移到PHP8.4。PHP8.4（目前尚未发布，但我们可以理解为迁移到PHP8.0+的版本）相对于PHP5.6有大量的变化和废弃的功能。下面我们将逐步分析代码并修改。主要注意事项：1.短标签`<?`和`<?=`：在PHP5.6中，短标签在某些配置下可用，但在PHP7+中，虽然短标签`<?=`（用于输出）仍然可用，但短标签`<?`（不带等号）已被废弃或需要明确开启。建议将`<?`替换为`<?php`，而`<?=`可以保留，因为它在PHP中始终可用。2.全局变量：代码中使用了`$_SESSION`和`$_GLOBAL_CONF`等，需要确保这些变量在PHP8中仍然正确初始化。3.`register_globals`：在PHP5.6中，`register_globals`可能被开启，但在PHP8中已完全移除。因此，代码中直接使用的变量（如`$ss_name`、`$ss_password`、`$key`、`$value`、`$productid`、`$typeid`）应该通过超全局数组（如`$_POST`、`$_GET`、`$_SESSION`）来获取，而不是依赖于注册全局变量。4.代码中有一段被注释掉的JavaScript代码，我们不需要修改它，因为它是注释状态。5.错误抑制符`@`：如果代码中有使用，需要注意在PHP8中可能会更严格地报错。6.MySQL扩展：代码中没有直接出现MySQL函数，但如果有，需要替换为MySQLi或PDO。7.`$_SESSION`的使用：在PHP8中，`$_SESSION`的使用方式没有改变，但需要确保在操作`$_SESSION`之前已经调用了`session_start()`。修改步骤：1.替换短标签：将`<?`替换为`<?php`，保留`<?=`。2.将直接使用的变量改为从超全局数组获取。例如：-将`$ss_name`、`$ss_password`改为`$_SESSION['ss_name']`和`$_SESSION['ss_password']`（需要确保这些session变量存在）。-同样，将`$key`、`$value`、`$productid`、`$typeid`改为从`$_POST`或`$_GET`中获取（根据表单提交方法，这里表单是`method=post`，所以可能是`$_POST`）。3.在代码开头，检查是否已经启动了session。通常，`session_start()`应该在脚本开始处调用。在`global.php`中可能已经启动了session，但为了确保，可以在代码开头检查。但是，请注意，代码中已经包含了`global.php`，我们假设它已经处理了session。如果没有，则需要添加。4.替换过时的标签：-`<BODY>`标签改为小写`<body>`（虽然不是PHP问题，但建议遵循XHTML标准）。-`<center>`标签在HTML5中已废弃，改用CSS。5.代码中使用了`<?if(...)`，这是短标签，应改为`<?phpif(...)`。6.在表单中，有`<?if($key=="model_no")echo"selected";`，需要改为`<?phpif(isset($key)&&$key=="model_no")echo"selected";`，以避免未定义变量警告。7.PHP8中，未定义变量的通知可能会变成警告，因此需要确保变量在使用前已经定义或者进行判断。由于代码较长，我们只修改关键部分。以下是修改后的代码：```php<?phprequire_once("include/global.php");?><html><head><?phpechogetMeta('gb')?><title><?phpecho$_GLOBAL_CONF['SITE_NAME']?></title></head><linkrel="stylesheet"href="/common.css"type="text/css"><style>a{color:#616651}.img1{border:solid0black}</style><bodylink="#cc0000"leftmargin="0"topmargin="0"marginwidth="0"marginheight="0"><?phprequire_once("include/header.php");?><?php/*这里是注释掉的JavaScript代码，我们不需要修改*/?><divstyle="margin:0auto;width:95%;"><tablewidth="100%"border="0"align="center"cellpadding="0"cellspacing="0"><tr><td><tablewidth="100%"border="0"cellspacing="0"cellpadding="0"><tr><tdwidth="2"><imgsrc="images/tb_left.jpg"width="2"height="28"/></td><tdbackground="images/tb_bg.jpg"><tablewidth="100%"border="0"cellspacing="0"cellpadding="0"><?php//注意：这里我们用$_SESSION代替了原来的$ss_admin,$ss_name,$ss_passwordif(!empty($_SESSION['ss_admin'])&&$_SESSION['ss_admin']>0){//我们使用session中的用户名和密码echo'<formname="loginform"method="post"action="/login.php"><inputtype="hidden"name="username"value="'.htmlspecialchars($_SESSION['ss_name']).'"><inputtype="hidden"name="password"value="'.htmlspecialchars($_SESSION['ss_password']).'">';}?><tr><tdwidth="9"> </td><tdwidth=111><tableborder="0"cellspacing="0"cellpadding="0"><tr><tdwidth="2"><imgsrc="images/tb_sel_left.jpg"width="2"height="28"/></td><tdwidth="124"align="center"background="images/tb_sel_bg.jpg"class="selmenu">首页Home</td><tdwidth="4"><imgsrc="images/tb_sel_right.jpg"width="4"height="28"/></td></tr></table></td><tdalign="center"><ahref="/search.php"class="menu">产品Products</a></td><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/newest"class="menu">新产品NewProducts</a></td><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/help/about.php"class="menu">联系我们Contactus</a></td><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/register"class="menu">注册Register</a></td><?phpif(!empty($_SESSION['ss_admin'])&&$_SESSION['ss_admin']>0){?><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/admin"class="menu"target="_blank">Admin</a><inputtype="submit"value="ReLogin"style="cursor:hand"></td><?php}?><?phpif(!empty($_SESSION['ss_userid'])&&$_SESSION['ss_userid']>0){?><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/bill"class="menu">Bills</a></td><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/logout.php"class="menu">退出Logout</a></td><?php}else{?><tdalign="center"><spanclass="bai">|</span></td><tdalign="center"><ahref="/login.php"class="menu">登录Login</a></td><?php}?></tr><?phpif(!empty($_SESSION['ss_admin'])&&$_SESSION['ss_admin']>0){echo'</form>';}?></table></td><tdwidth="2"><imgsrc="images/tb_right.jpg"width="2"height="28"/></td></tr></table></td></tr><tr><td><tablewidth="100%"border="0"cellspacing="0"cellpadding="0"><formname="searchform"action="search.php"method="post"><tr><tdwidth="6"><imgsrc="images/tb_bt_left.jpg"width="6"height="62"/></td><tdbackground="images/tb_bt_bg.jpg"><tablewidth="100%"border="0"cellspacing="0"cellpadding="0"><tr><tdwidth="266"align="center"valign="top"class="vd"style="font-size:11px;color:#333333"></td><tdheight="58"align="center"><selectname="key"><optionvalue="model_no"<?phpif(isset($_POST['key'])&&$_POST['key']=="model_no")echo"selected";?>>型号ModelNo.</option><optionvalue="name"<?phpif(isset($_POST['key'])&&$_POST['key']=="name")echo"selected";?>>名称Name</option><optionvalue="features"<?phpif(isset($_POST['key'])&&$_POST['key']=="features")echo"selected";?>>规格Features</option><optionvalue="description"<?phpif(isset($_POST['key'])&&$_POST['key']=="description")echo"selected";?>>说明Descriptions</option><optionvalue="fob_port"<?phpif(isset($_POST['key'])&&$_POST['key']=="fob_port")echo"selected";?>>港口FobPort</option><optionvalue="color"<?phpif(isset($_POST['key'])&&$_POST['key']=="color")echo"selected";?>>颜色Color</option><optionvalue="matial"<?phpif(isset($_POST['key'])&&$_POST['key']=="matial")echo"selected";?>>材料Matial</option></select>关键词Keyword:<inputtype="text"size="5"name="value"value="<?phpechoisset($_POST['value'])?htmlspecialchars($_POST['value']):'';?>">产品号ProductID:<inputtype="text"size="5"name="productid"value="<?phpechoisset($_POST['productid'])?htmlspecialchars($_POST['productid']):'';?>"><inputtype="hidden"name="typeid"value="<?phpechoisset($_POST['typeid'])?htmlspecialchars($_POST['typeid']):'';?>"><inputtype="submit"name="sub6"value="查找Search"></td></tr></table></td><tdwidth="7"><imgsrc="images/tb_bt_right.jpg"width="7"height="62"/></td></tr></form></table></td></tr></table><tablewidth="95%"border="0"align="center"cellpadding="0"cellspacing="0"style="margin:0auto;"><tr><tdvalign="top"width="350"><tablewidth="100%"height="160"border="0"cellpadding="1"cellspacing="1"bgcolor="#F3F1E7"><tr><tdvalign="top"bgcolor="#FFFFFF"><tablewidth="100%"border="0"cellspacing="0"cellpadding="5"><tr><tdheight="22"align="left"bgcolor="#E7E4D2"></td></tr><tr><tdheight="350"align="left"class="vd"><fontstyle="font-size:14px;color:#000000;line-height:22px"><?phpinclude"include/html/notice1.html";?></font></td></tr><tr><tdheight="1"bgcolor="#f5f5f5"></td></tr

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