這篇文章主要介紹了php上傳圖片客戶端和服務器端實現方法,涉及php操作文件的技巧,涉及圖片後綴驗證、文件重命名等常用方法,具有一定參考借鑒價值,需要的朋友可以參考下
本文實例講述了php上傳圖片客戶端和服務器端實現方法。分享給大家供大家參考。具體如下：
前台表單代碼
? 1 2 3 4 <form name="form1" method="post" action="admin_upfile.php" enctype="multipart/form-data"> <input type="file" name="pic"> <input type="submit" name="Submit" value="開始上傳" class="button"> </form>後端php代碼
? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 <?php //這裡上傳 $upsize判斷上傳文件的大小 $uppath = "/attached/"; //文件上傳路徑 //轉換根目錄的路徑 if (strpos($uppath, "/") == 0) { $i = 0; $thpath = $_SERVER["SCRIPT_NAME"]; $thpath = substr($thpath, 1, strlen($thpath)); while (strripos($thpath, "/") !== false) { $thpath = substr($thpath, strpos($thpath, "/") + 1, strlen($thpath)); $i = ++$i; } $pp = ""; for ($j = 0; $j < $i; ++$j) { $pp .= "../"; } $uppaths = $pp . substr($uppath, 1, strlen($thpath)); } $filename = date("y-m-d"); if (is_dir($uppaths . $filename) != TRUE) mkdir($uppaths . $filename, 0777); $f = $_FILES['pic']; if ($f["type"] != "image/gif" && $f["type"] != "image/pjpeg" && $f["type"] != "image/jpeg" && $f["type"] != "image/x-png") { echo "<script>alert('只能上傳圖片格式的文件');window.close()</script>"; return false; } //獲得文件擴展名 $temp_arr = explode(".", $f["name"]); $file_ext = array_pop($temp_arr); $file_ext = trim($file_ext); $file_ext = strtolower($file_ext); //新文件名 $new_file_name = md5(date("YmdHis")) . '.' . $file_ext; echo $dest = $uppaths . $filename . "/" . date("ymdhis") . "_" . $new_file_name; //設置文件名為日期加上文件名避免重復 上傳目錄 echo $dest1 = $uppath . $filename . "/" . date("ymdhis") . "_" . $new_file_name; //設置文件名為日期加上文件名避免重復 $r = move_uploaded_file($f['tmp_name'], $dest); ?>希望本文所述對大家的php程序設計有所幫助。
