PHP上传图片基本代码示例
<p>一、HTML代码如下：</p><div class="cnblogs_code">
<pre><form name=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">form2</span><span style="color: rgba(128, 0, 0, 1)">"</span> method=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">post</span><span style="color: rgba(128, 0, 0, 1)">"</span> action=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">?type=add</span><span style="color: rgba(128, 0, 0, 1)">"</span> enctype=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">multipart/form-data</span><span style="color: rgba(128, 0, 0, 1)">"</span>>
<input type=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">file</span><span style="color: rgba(128, 0, 0, 1)">"</span> name=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">file</span><span style="color: rgba(128, 0, 0, 1)">"</span> id=<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">cover</span><span style="color: rgba(128, 0, 0, 1)">"</span> required/>
</form></pre>
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<p>二、PHP代码如下：</p>
<div class="cnblogs_code">
<pre><span style="color: rgba(0, 0, 255, 1)">if</span> ((<span style="color: rgba(128, 0, 128, 1)">$_GET</span>["type"] == "edit") && <span style="color: rgba(128, 0, 128, 1)">$_POST</span><span style="color: rgba(0, 0, 0, 1)">) {
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">判断上传的文件是否出错,是的话，返回错误</span>
<span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["error"<span style="color: rgba(0, 0, 0, 1)">])
{
</span><span style="color: rgba(0, 0, 255, 1)">echo</span> <span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["error"<span style="color: rgba(0, 0, 0, 1)">];
</span><span style="color: rgba(0, 0, 255, 1)">exit</span><span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">
{
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">没有出错
//加限制条件
//判断上传文件类型为png或jpg且大小不超过1024000B</span>
<span style="color: rgba(0, 0, 255, 1)">if</span>((<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["type"]=="image/png"||<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["type"]=="image/jpeg")&&<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["size"]<1024000<span style="color: rgba(0, 0, 0, 1)">)
{
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">防止文件名重复</span>
<span style="color: rgba(128, 0, 128, 1)">$path</span> = "/upload/movie/".<span style="color: rgba(0, 128, 128, 1)">date</span>('Y-m-d')."/".<span style="color: rgba(0, 128, 128, 1)">time</span>().<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>["file"]["name"<span style="color: rgba(0, 0, 0, 1)">];
</span><span style="color: rgba(128, 0, 128, 1)">$filename</span> = <span style="color: rgba(128, 0, 128, 1)">$_SERVER</span>['DOCUMENT_ROOT'].<span style="color: rgba(128, 0, 128, 1)">$path</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">转码，把utf-8转成gb2312,返回转换后的字符串， 或者在失败时返回 FALSE。
//$filename =iconv("UTF-8","gb2312",$filename);
//检查文件或目录是否存在</span>
<span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 128, 128, 1)">file_exists</span>(<span style="color: rgba(128, 0, 128, 1)">$filename</span><span style="color: rgba(0, 0, 0, 1)">))
{
</span><span style="color: rgba(0, 0, 255, 1)">echo</span>"该文件已存在"<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">exit</span><span style="color: rgba(0, 0, 0, 1)">;
}
</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">
{
</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">保存文件, move_uploaded_file 将上传的文件移动到新位置</span>
<span style="color: rgba(0, 0, 255, 1)">if</span> ( ! @<span style="color: rgba(0, 128, 128, 1)">copy</span>(<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>['file']['tmp_name'], <span style="color: rgba(128, 0, 128, 1)">$file_name</span><span style="color: rgba(0, 0, 0, 1)">)){
</span><span style="color: rgba(128, 0, 128, 1)">$dir</span> = <span style="color: rgba(128, 0, 128, 1)">$_SERVER</span>['DOCUMENT_ROOT'].'/upload/moviepic/'.<span style="color: rgba(0, 128, 128, 1)">date</span>('Y-m-d'<span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(!<span style="color: rgba(0, 128, 128, 1)">is_dir</span>(<span style="color: rgba(128, 0, 128, 1)">$dir</span><span style="color: rgba(0, 0, 0, 1)">)){
</span><span style="color: rgba(0, 128, 128, 1)">mkdir</span>(<span style="color: rgba(128, 0, 128, 1)">$dir</span>,0777<span style="color: rgba(0, 0, 0, 1)">);
}
</span><span style="color: rgba(0, 0, 255, 1)">if</span>(<span style="color: rgba(0, 128, 128, 1)">move_uploaded_file</span>(<span style="color: rgba(128, 0, 128, 1)">$_FILES</span>['file']['tmp_name'],<span style="color: rgba(128, 0, 128, 1)">$filename</span><span style="color: rgba(0, 0, 0, 1)">)){
</span><span style="color: rgba(0, 0, 255, 1)">echo</span> "上传成功"<span style="color: rgba(0, 0, 0, 1)">;
}</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">{
</span><span style="color: rgba(0, 0, 255, 1)">echo</span> "上传失败"<span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 0, 255, 1)">exit</span><span style="color: rgba(0, 0, 0, 1)">;
}
}
}
}
</span><span style="color: rgba(0, 0, 255, 1)">else</span><span style="color: rgba(0, 0, 0, 1)">
{
</span><span style="color: rgba(0, 0, 255, 1)">echo</span>"文件类型不对"<span style="color: rgba(0, 0, 0, 1)">;
}
}
}</span></pre>
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<p> </p><br><br>
来源：https://www.cnblogs.com/phperlinxinlan/p/11277948.html
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