php上傳功能集后綴名判斷跟隨機(jī)命名
Jun 13, 2016 pm 12:24 PM
php上傳功能集后綴名判斷和隨機(jī)命名
form.php
<span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="content-type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html"</span><span style="color: #ff0000;"> charset</span><span style="color: #0000ff;">="utf-8"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>Upload Image<span style="color: #0000ff;"></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"><span style="color: #800000;">form </span><span style="color: #ff0000;">method</span><span style="color: #0000ff;">="post"</span><span style="color: #ff0000;"> action</span><span style="color: #0000ff;">="upload.php"</span><span style="color: #ff0000;"> enctype</span><span style="color: #0000ff;">="multipart/form-data"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="hidden"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="MAX_FILE_SEZE"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="2000000"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="file"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="view"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><span style="color: #800000;">input </span><span style="color: #ff0000;">type</span><span style="color: #0000ff;">="submit"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="upload"</span><span style="color: #ff0000;"> name</span><span style="color: #0000ff;">="B1"</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">form</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span><span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span>
upload.php
<span style="color: #000000;">php</span><span style="color: #0000ff;">include</span>("check.php"); <span style="color: #008000;">//</span><span style="color: #008000;"> 引入自定義函數(shù)文件</span><span style="color: #800080;">$type</span> = <span style="color: #0000ff;">array</span>("jpg", "gif", "bmp", "jpeg", "png"<span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;"> 判斷上傳文件類型</span><span style="color: #800080;">$fileext</span> = <span style="color: #008080;">strtolower</span>(fileext(<span style="color: #800080;">$_FILES</span>['file']['name'<span style="color: #000000;">]));</span><span style="color: #800080;">$uploadfilename</span> = random(8<span style="color: #000000;">);</span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">in_array</span>(<span style="color: #800080;">$fileext</span>, <span style="color: #800080;">$type</span><span style="color: #000000;">)){ </span><span style="color: #800080;">$filename</span> = <span style="color: #008080;">explode</span>(".", <span style="color: #800080;">$_FILES</span>['file']['name'<span style="color: #000000;">]); </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">is_uploaded_file</span>(<span style="color: #800080;">$_FILES</span>['file']['tmp_name'<span style="color: #000000;">])){</span><span style="color: #008000;">//</span><span style="color: #008000;"> echo $_FILES['file']['tmp_name'];</span> <span style="color: #800080;">$flag</span> = <span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$_FILES</span>['file']['tmp_name'], "/Library/WebServer/Documents/test/".<span style="color: #800080;">$uploadfilename</span>.".".<span style="color: #800080;">$fileext</span><span style="color: #000000;">); </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$flag</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">echo</span> "上傳成功！"<span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">echo</span> "Error."<span style="color: #000000;">; } </span><span style="color: #0000ff;">echo</span> "<a href="javascript:history.go(-1)">Back</a>"<span style="color: #000000;">; }}</span>
check.php
<span style="color: #000000;">php</span><span style="color: #008080;">header</span>("Content-type:text/html;charset=utf8"<span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;"> 獲取文件后綴名函數(shù)</span><span style="color: #0000ff;">function</span> fileext(<span style="color: #800080;">$filename</span><span style="color: #000000;">){ </span><span style="color: #800080;">$sTemp</span> = <span style="color: #008080;">strrchr</span>(<span style="color: #800080;">$filename</span>, "."<span style="color: #000000;">); </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">substr</span>(<span style="color: #800080;">$sTemp</span>, 1<span style="color: #000000;">);}</span><span style="color: #0000ff;">function</span> fileext2(<span style="color: #800080;">$filename</span><span style="color: #000000;">){ </span><span style="color: #800080;">$sTemp</span> = <span style="color: #008080;">explode</span>(".", <span style="color: #800080;">$filename</span><span style="color: #000000;">); </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$sTemp</span>[<span style="color: #008080;">count</span>(<span style="color: #800080;">$sTemp</span>)-1<span style="color: #000000;">];}</span><span style="color: #008000;">//</span><span style="color: #008000;"> 生成隨機(jī)文件名函數(shù)</span><span style="color: #0000ff;">function</span> random(<span style="color: #800080;">$length</span><span style="color: #000000;">){ </span><span style="color: #800080;">$captchaSource</span> = "0123456789abcdefghijklmnopqrstuvwxyz這是一個(gè)隨機(jī)打印輸出字符串的例子"<span style="color: #000000;">; </span><span style="color: #800080;">$captchaResult</span> = "2015"; <span style="color: #008000;">//</span><span style="color: #008000;"> 隨機(jī)數(shù)返回值</span> <span style="color: #800080;">$captchaSentry</span> = ""; <span style="color: #008000;">//</span><span style="color: #008000;"> 隨機(jī)數(shù)中間變量</span> <span style="color: #0000ff;">for</span>(<span style="color: #800080;">$i</span>=0;<span style="color: #800080;">$i</span>$length;<span style="color: #800080;">$i</span>++<span style="color: #000000;">){ </span><span style="color: #800080;">$n</span> = <span style="color: #008080;">rand</span>(0, 35); <span style="color: #008000;">#</span><span style="color: #008000;">strlen($captchaSource));</span> <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$n</span> >= 36<span style="color: #000000;">){ </span><span style="color: #800080;">$n</span> = 36 + <span style="color: #008080;">ceil</span>((<span style="color: #800080;">$n</span>-36)/3) * 3<span style="color: #000000;">; </span><span style="color: #800080;">$captchaResult</span> .= <span style="color: #008080;">substr</span>(<span style="color: #800080;">$captchaSource</span>, <span style="color: #800080;">$n</span>, 3<span style="color: #000000;">); }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #800080;">$captchaResult</span> .= <span style="color: #008080;">substr</span>(<span style="color: #800080;">$captchaSource</span>, <span style="color: #800080;">$n</span>, 1<span style="color: #000000;">); } } </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$captchaResult</span><span style="color: #000000;">;}</span>?>
將三個(gè)文件整合成一個(gè)：
<span style="color: #000000;">php</span><span style="color: #008000;">//</span><span style="color: #008000;"> 獲取文件后綴名函數(shù)</span><span style="color: #0000ff;">function</span> fileext(<span style="color: #800080;">$filename</span><span style="color: #000000;">){ </span><span style="color: #800080;">$sTemp</span> = <span style="color: #008080;">strrchr</span>(<span style="color: #800080;">$filename</span>, "."<span style="color: #000000;">); </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">substr</span>(<span style="color: #800080;">$sTemp</span>, 1<span style="color: #000000;">);}</span><span style="color: #0000ff;">function</span> fileext2(<span style="color: #800080;">$filename</span><span style="color: #000000;">){ </span><span style="color: #800080;">$sTemp</span> = <span style="color: #008080;">explode</span>(".", <span style="color: #800080;">$filename</span><span style="color: #000000;">); </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$sTemp</span>[<span style="color: #008080;">count</span>(<span style="color: #800080;">$sTemp</span>)-1<span style="color: #000000;">];}</span><span style="color: #008000;">//</span><span style="color: #008000;"> 生成隨機(jī)文件名函數(shù)</span><span style="color: #0000ff;">function</span> random(<span style="color: #800080;">$length</span><span style="color: #000000;">){ </span><span style="color: #800080;">$captchaSource</span> = "0123456789abcdefghijklmnopqrstuvwxyz這是一個(gè)隨機(jī)打印輸出字符串的例子"<span style="color: #000000;">; </span><span style="color: #800080;">$captchaResult</span> = "2015"; <span style="color: #008000;">//</span><span style="color: #008000;"> 隨機(jī)數(shù)返回值</span> <span style="color: #800080;">$captchaSentry</span> = ""; <span style="color: #008000;">//</span><span style="color: #008000;"> 隨機(jī)數(shù)中間變量</span> <span style="color: #0000ff;">for</span>(<span style="color: #800080;">$i</span>=0;<span style="color: #800080;">$i</span>$length;<span style="color: #800080;">$i</span>++<span style="color: #000000;">){ </span><span style="color: #800080;">$n</span> = <span style="color: #008080;">rand</span>(0, 35); <span style="color: #008000;">#</span><span style="color: #008000;">strlen($captchaSource));</span> <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$n</span> >= 36<span style="color: #000000;">){ </span><span style="color: #800080;">$n</span> = 36 + <span style="color: #008080;">ceil</span>((<span style="color: #800080;">$n</span>-36)/3) * 3<span style="color: #000000;">; </span><span style="color: #800080;">$captchaResult</span> .= <span style="color: #008080;">substr</span>(<span style="color: #800080;">$captchaSource</span>, <span style="color: #800080;">$n</span>, 3<span style="color: #000000;">); }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #800080;">$captchaResult</span> .= <span style="color: #008080;">substr</span>(<span style="color: #800080;">$captchaSource</span>, <span style="color: #800080;">$n</span>, 1<span style="color: #000000;">); } } </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$captchaResult</span><span style="color: #000000;">;}</span><span style="color: #800080;">$type</span> = <span style="color: #0000ff;">array</span>("jpg", "gif", "bmp", "jpeg", "png"<span style="color: #000000;">);</span><span style="color: #008000;">//</span><span style="color: #008000;"> 判斷上傳文件類型</span><span style="color: #800080;">$fileext</span> = <span style="color: #008080;">strtolower</span>(fileext(<span style="color: #800080;">$_FILES</span>['file']['name'<span style="color: #000000;">]));</span><span style="color: #800080;">$uploadfilename</span> = random(8<span style="color: #000000;">);</span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">in_array</span>(<span style="color: #800080;">$fileext</span>, <span style="color: #800080;">$type</span><span style="color: #000000;">)){ </span><span style="color: #800080;">$filename</span> = <span style="color: #008080;">explode</span>(".", <span style="color: #800080;">$_FILES</span>['file']['name'<span style="color: #000000;">]); </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">is_uploaded_file</span>(<span style="color: #800080;">$_FILES</span>['file']['tmp_name'<span style="color: #000000;">])){</span><span style="color: #008000;">//</span><span style="color: #008000;"> echo $_FILES['file']['tmp_name'];</span> <span style="color: #800080;">$flag</span> = <span style="color: #008080;">move_uploaded_file</span>(<span style="color: #800080;">$_FILES</span>['file']['tmp_name'], "/Library/WebServer/Documents/test/".<span style="color: #800080;">$uploadfilename</span>.".".<span style="color: #800080;">$fileext</span><span style="color: #000000;">); </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$flag</span><span style="color: #000000;">){ </span><span style="color: #0000ff;">echo</span> "上傳成功！"<span style="color: #000000;">; }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{ </span><span style="color: #0000ff;">echo</span> "Error."<span style="color: #000000;">; } </span><span style="color: #0000ff;">echo</span> "<a href="javascript:history.go(-1)">Back</a>"<span style="color: #000000;">; }}</span>?> <meta http-equiv="content-type" content="text/html" charset="utf-8"> <title>Upload Image</title>
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