高手教你PHP上传多张图片_PHP教程-php教程-PHP中文网

Cutout老照片上色

Cutout.Pro推出的黑白图片上色

学习php时，你可能会遇到php上传多张图片问题，这里将介绍php上传多张图片问题的解决方法，在这里拿出来和大家分享一下。单张的图片上传是不复杂的，这里涉及到php上传多张图片和对图片格式的校验，保证上传的一定是图片，防止上传其他文件到服务器。

基本实现算法是使用数组的形式，把所有的图片提交个一个数组，对数组的元素进行一个个的处理。PHP其实不过是Web服务器的一个模块功能，所以首先要保证Web服务器的安全。当然Web服务器要安全又必须是先保证系统安全，这样就扯远了，无穷无尽。PHP可以和各种Web服务器结合，这里也只讨论Apache。非常建议以chroot方式安装启动Apache，这样即使Apache和PHP及其脚本出现漏洞，受影响的也只有这个禁锢的系统，不会危害实际系统。以下为引用的内容：

<OL class=dp-xml><LI class=alt><SPAN><SPAN class=tag><?</SPAN><SPAN class=tag-name>php</SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//图片目录  </SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>img_dir</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"../upload/"</SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN>//……html显示上传界面  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>/*图片上传处理*/  </SPAN><LI class=""><SPAN>//把图片传到服务器  </SPAN><LI class=alt><SPAN>//初始化变量  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute>uploaded</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>0</SPAN><SPAN>;  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>unuploaded</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>0</SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>//只允许五张图片上传  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>for($</SPAN><SPAN class=attribute>i</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>0</SPAN><SPAN>;$i</SPAN><SPAN class=tag><</SPAN><SPAN>=5;$i++)  </SPAN></SPAN><LI class=alt><SPAN>{  </SPAN><LI class=""><SPAN>//获取当前图片的信息  </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute>is_file</SPAN><SPAN>=$_FILES['imgfile']['name'][$i];  </SPAN></SPAN><LI class=""><SPAN>//如果当前图片不为空  </SPAN><LI class=alt><SPAN>if(!empty($is_file))  </SPAN><LI class=""><SPAN>{  </SPAN><LI class=alt><SPAN>//把当前图片的信息存储到变量里  </SPAN><LI class=""><SPAN>$result[$i]="  </SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>trclass</SPAN><SPAN class=tag-name>trclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>td2align</SPAN><SPAN>=center</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>".$_FILES['imgfile']['name'][$i]."</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>".round($_FILES['imgfile']['size'][$i]/1024,2)."K</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>".$_FILES['imgfile']['type'][$i]."</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>";  </SPAN></SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//判断上传的图片的类型是不是jpg,gif,png,bmp中的一种，同时判断是否上传成功  </SPAN><LI class=""><SPAN>if(  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>$_FILES['imgfile']['type'][$i]=="image/pjpeg"||  </SPAN><LI class=alt><SPAN>$_FILES['imgfile']['type'][$i]=="image/gif"||  </SPAN><LI class=""><SPAN>$_FILES['imgfile']['type'][$i]=="image/x-png"||  </SPAN><LI class=alt><SPAN>$_FILES['imgfile']['type'][$i]=="image/bmp"  </SPAN><LI class=""><SPAN>)  </SPAN><LI class=alt><SPAN>{  </SPAN><LI class=""><SPAN>//如果上传的文件没有在服务器上存在  </SPAN><LI class=alt><SPAN>if(!file_exists($img_dir.$_FILES['imgfile']['name'][$i]))  </SPAN><LI class=""><SPAN>{  </SPAN><LI class=alt><SPAN>//把图片文件从临时文件夹中转移到我们指定上传的目录中  </SPAN><LI class=""><SPAN>move_uploaded_file($_FILES['imgfile']['tmp_name'][$i],  </SPAN><LI class=alt><SPAN>$img_dir.$_FILES['imgfile']['name'][$i]);  </SPAN><LI class=""><SPAN>$result[$i]</SPAN><SPAN class=attribute>.</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"成功"</SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN>$uploaded++;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN>else//如果文件已经在服务器上存在  </SPAN><LI class=""><SPAN>{  </SPAN><LI class=alt><SPAN>$result[$i]</SPAN><SPAN class=attribute>.</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"<fontcolor=red>文件已存在</font>"</SPAN><SPAN>;  </SPAN></SPAN><LI class=""><SPAN>$unuploaded++;  </SPAN><LI class=alt><SPAN>continue;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN>else  </SPAN><LI class=alt><SPAN>{  </SPAN><LI class=""><SPAN>$result[$i]</SPAN><SPAN class=attribute>.</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"<fontcolor=red>失败</font>"</SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN>$unuploaded++;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN>$result[$i]</SPAN><SPAN class=attribute>.</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"</td></tr>"</SPAN><SPAN>;  </SPAN></SPAN><LI class=""><SPAN>}//endif  </SPAN><LI class=alt><SPAN>}//endfor  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>//如果没有选择任何图片  </SPAN><LI class=alt><SPAN>if(empty($result))  </SPAN><LI class=""><SPAN>{  </SPAN><LI class=alt><SPAN>prompt_msg("错误信息","没有选择任何图片。","返回上一步","uploadimg.php?</SPAN><SPAN class=attribute>action</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>upload</SPAN><SPAN>");  </SPAN></SPAN><LI class=""><SPAN>exit();  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>//显示所有上传后的结果  </SPAN><LI class=""><SPAN>echo"</SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>tablecellpadding</SPAN><SPAN class=tag-name>tablecellpadding</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>4cellspacing</SPAN><SPAN>=</SPAN><SPAN class=attribute>1border</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>0class</SPAN><SPAN>=</SPAN><SPAN class=attribute>tablewidth</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>400align</SPAN><SPAN>=left</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>trclass</SPAN><SPAN class=tag-name>trclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>navialign</SPAN><SPAN>=center</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>文件名</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>大小</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>类型</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN>上传结果</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN>";  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>foreach($resultas$value)  </SPAN><LI class=""><SPAN>{  </SPAN><LI class=alt><SPAN>echo$value;  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>echo"</SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>trclass</SPAN><SPAN class=tag-name>trclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>td1</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>tdcolspan</SPAN><SPAN class=tag-name>tdcolspan</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>4</SPAN><SPAN class=tag>></SPAN><SPAN>共上传".($uploaded+$unuploaded).",成功:$uploaded,失败:</SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>fontcolor</SPAN><SPAN class=tag-name>fontcolor</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>red</SPAN><SPAN class=tag>></SPAN><SPAN>$unuploaded</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>font</SPAN><SPAN class=tag>></SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>trclass</SPAN><SPAN class=tag-name>trclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>navi</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>tdcolspan</SPAN><SPAN class=tag-name>tdcolspan</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>4align</SPAN><SPAN>=center</SPAN><SPAN class=tag>></SPAN><SPAN>[</SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>ahref</SPAN><SPAN class=tag-name>ahref</SPAN><SPAN>='uploadimg.php?action=upload'</SPAN><SPAN class=attribute-value>title</SPAN><SPAN>='继续上传'</SPAN><SPAN class=tag>></SPAN><SPAN>继续上传</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>a</SPAN><SPAN class=tag>></SPAN><SPAN>]<br>    [</SPAN><SPAN class=tag><</SPAN><SPAN class=attribute>ahref</SPAN><SPAN class=tag-name>ahref</SPAN><SPAN>='image.php'</SPAN><SPAN class=attribute-value>title</SPAN><SPAN>='浏览图片'</SPAN><SPAN class=tag>></SPAN><SPAN>浏览图片</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>a</SPAN><SPAN class=tag>></SPAN><SPAN>]</SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag></</SPAN><SPAN class=tag-name>table</SPAN><SPAN class=tag>></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN>";  </SPAN><LI class=""><SPAN></SPAN><SPAN class=tag>?></SPAN><SPAN> </SPAN></SPAN></LI></OL>

登录后复制