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這篇文章主要介紹“php如何實現上傳功能集后綴名判斷和隨機命名”,在日常操作中,相信很多人在php如何實現上傳功能集后綴名判斷和隨機命名問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”php如何實現上傳功能集后綴名判斷和隨機命名”的疑惑有所幫助!接下來,請跟著小編一起來學習吧!
不廢話了,具體請看下文代碼示例講解。
form.php
<html> <head> <meta http-equiv="content-type" content="text/html" charset="utf-8"> <title>Upload Image</title> </head> <body> <form method="post" action="upload.php" enctype="multipart/form-data"> <input type="hidden" name="MAX_FILE_SEZE" value="2000000"> <input type="file" name="file" value="view"> <input type="submit" value="upload" name="B1"> </form> </body> </html>
upload.php
<?php include("check.php"); // 引入自定義函數文件 $type = array("jpg", "gif", "bmp", "jpeg", "png"); // 判斷上傳文件類型 $fileext = strtolower(fileext($_FILES['file']['name'])); $uploadfilename = random(8); if(in_array($fileext, $type)){ $filename = explode(".", $_FILES['file']['name']); if(is_uploaded_file($_FILES['file']['tmp_name'])){ // echo $_FILES['file']['tmp_name']; $flag = move_uploaded_file($_FILES['file']['tmp_name'], "/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext); if($flag){ echo "上傳成功!"; }else{ echo "Error."; } echo "<a href='javascript:history.go(-1)'>Back</a>"; } }
check.php
<?php header("Content-type:text/html;charset=utf8"); // 獲取文件后綴名函數 function fileext($filename){ $sTemp = strrchr($filename, "."); return substr($sTemp, 1); } function fileext2($filename){ $sTemp = explode(".", $filename); return $sTemp[count($sTemp)-1]; } // 生成隨機文件名函數 function random($length){ $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機打印輸出字符串的例子"; $captchaResult = "2015"; // 隨機數返回值 $captchaSentry = ""; // 隨機數中間變量 for($i=0;$i<$length;$i++){ $n = rand(0, 35); #strlen($captchaSource)); if($n >= 36){ $n = 36 + ceil(($n-36)/3) * 3; $captchaResult .= substr($captchaSource, $n, 3); }else{ $captchaResult .= substr($captchaSource, $n, 1); } } return $captchaResult; } ?>
將三個文件整合成一個:
<?php // 獲取文件后綴名函數 function fileext($filename){ $sTemp = strrchr($filename, "."); return substr($sTemp, 1); } function fileext2($filename){ $sTemp = explode(".", $filename); return $sTemp[count($sTemp)-1]; } // 生成隨機文件名函數 function random($length){ $captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz這是一個隨機打印輸出字符串的例子"; $captchaResult = "2015"; // 隨機數返回值 $captchaSentry = ""; // 隨機數中間變量 for($i=0;$i<$length;$i++){ $n = rand(0, 35); #strlen($captchaSource)); if($n >= 36){ $n = 36 + ceil(($n-36)/3) * 3; $captchaResult .= substr($captchaSource, $n, 3); }else{ $captchaResult .= substr($captchaSource, $n, 1); } } return $captchaResult; } $type = array("jpg", "gif", "bmp", "jpeg", "png"); // 判斷上傳文件類型 $fileext = strtolower(fileext($_FILES['file']['name'])); $uploadfilename = random(8); if(in_array($fileext, $type)){ $filename = explode(".", $_FILES['file']['name']); if(is_uploaded_file($_FILES['file']['tmp_name'])){ // echo $_FILES['file']['tmp_name']; $flag = move_uploaded_file($_FILES['file']['tmp_name'], "/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext); if($flag){ echo "上傳成功!"; }else{ echo "Error."; } echo "<a href='javascript:history.go(-1)'>Back</a>"; } } ?> <html> <head> <meta http-equiv="content-type" content="text/html" charset="utf-8"> <title>Upload Image</title> </head> <body> <form method="post" action="" enctype="multipart/form-data"> <input type="hidden" name="MAX_FILE_SEZE" value="2000000"> <input type="file" name="file" value="view"> <input type="submit" value="upload" name="B1"> </form> </body> </html>
到此,關于“php如何實現上傳功能集后綴名判斷和隨機命名”的學習就結束了,希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習,快去試試吧!若想繼續學習更多相關知識,請繼續關注億速云網站,小編會繼續努力為大家帶來更多實用的文章!
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