php檔案上傳
使用php上傳檔案的簡單紀錄，順便留一下自己以前用的class。
首先是基本的html設定，使用上傳時html的form需要加上enctype的設定，file如果需要複選多個檔案的話需要加上multiple。
<form method="post" enctype="multipart/form-data" action="upload.php">
<!--單檔案-->
<input type="file" name="upfile">
<!--可選擇多檔案-->
<input type="file" name="multfile[]" multiple>
<input type="submit" value="上傳">
</form>
php的部分則可以利用$_FILES取得上傳的資料，資料欄位如下。
//假設name為upfile
echo $_FILES['upfile']['name'];//印出上傳檔案名稱
//欄位
[name] => "上傳檔案原始名稱"
[type] => image/jpeg //檔案類型
[tmp_name] => /tmp/php/php6hst32 //暫存檔案位置
[error] => UPLOAD_ERR_OK //狀態 可用來檢查上傳是否成功(UPLOAD_ERR_OK)
[size] => 12345 //大小
多檔案的話資料則會像這樣
echo $_FILES['upfile']['name'][0];
////////
[name] => Array
(
[file1] => File
[file2] => File2
)
...
其他的上傳狀態[error]可以從這邊查
https://www.php.net/manual/en/features.file-upload.errors.php
下方簡單紀錄一下以前寫的class，把自己常用的功能組一組的東西。
class File_up
{
private function randomstr($len=8){
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i <= $len; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
private function RemoveSpecialChar($str){
$res = str_ireplace(
array( '\'', '"', ',', ';', '<', '>'
, ' ', ' ', '+', '\\', '\/', ':', '*'
, '?', '|')
, '', $str);
return $res;
}
//單檔案用 $_FILE 可通過副檔名 檔案最大限制 儲存位置 檔名加入額外字串
public function d_file_up($fileData, $setPassExtArr, $fileLimit, $RootDir, $exfilefoot=""){
if(!is_dir($RootDir)){
mkdir($RootDir, 0755);
}
$f_name = $fileData["name"];
$f_size = $fileData["size"];
$f_tmp = $fileData["tmp_name"];
$r_file_name = "";
$passExt = array("pdf", "doc", "docx", "csv", "xls", "xlsx", "ppt", "pptx", "jpg", "jpeg", "png", "gif");
if(count($setPassExtArr) > 0){
$passExt = $setPassExtArr;
}
if($exfilefoot=='random'){
$exfilefoot = $this->randomstr(8);
}
if(is_uploaded_file($f_tmp)){//判斷暫存檔是否存在
if($f_size < $fileLimit){//檔案大小限制
//附檔名
$path_parts = pathinfo($f_name);
$extension = strtolower($path_parts['extension']);
$filename = $this->RemoveSpecialChar($path_parts['filename']);
$ispass = false;
foreach($passExt as $val){
if($val == $extension){
$ispass = true;
}
}
if($ispass){
$savename = $filename.$exfilefoot. "." . $extension;
$tempi = 1;
While(is_file($RootDir."/".$savename)){
$savename = $filename.$exfilefoot . "(" . $tempi . ")" . "." . $extension;
$tempi++;
}
$r_file_name = $savename;
move_uploaded_file($f_tmp , $RootDir."/".$savename);
}
}
}
return $r_file_name;
}
//多檔案用 $_FILE 可通過副檔名 檔案最大限制 儲存位置 檔名加入額外字串 額外文字
public function d_file_up_array($fileData, $setPassExtArr, $fileLimit, $RootDir, $exfilefoot="", &$remarkarr = array()){
if(!is_dir($RootDir)){
mkdir($RootDir, 0755);
}
$r_file_name = array();
$tmp_remark = array();
$file_count = count($fileData["name"]);
if($exfilefoot=='random'){
$exfilefoot = $this->randomstr(8);
}
echo $file_count;
for($i=0; $i<$file_count; $i++){
$f_name = $fileData["name"][$i];
$f_size = $fileData["size"][$i];
$f_tmp = $fileData["tmp_name"][$i];
$passExt = array("pdf", "doc", "docx", "csv", "xls", "xlsx", "ppt", "pptx", "jpg", "jpeg", "png", "gif");
if(count($setPassExtArr) > 0){
$passExt = $setPassExtArr;
}
if(is_uploaded_file($f_tmp)){//判斷暫存檔是否存在
if($f_size < $fileLimit){//檔案大小限制
//附檔名
$path_parts = pathinfo($f_name);
$extension = strtolower($path_parts['extension']);
$filename = $this->RemoveSpecialChar($path_parts['filename']);
$ispass = false;
foreach($passExt as $val){
if($val == $extension){
$ispass = true;
}
}
if($ispass){
$savename = $filename.$exfilefoot. "." . $extension;
$tempi = 1;
While(is_file($RootDir."/".$savename)){
$savename = $filename.$exfilefoot . "(" . $tempi . ")" . "." . $extension;
$tempi++;
}
array_push($r_file_name, $savename);
move_uploaded_file($f_tmp , $RootDir."/".$savename);
if(isset($remarkarr[$i])){
array_push($tmp_remark, $remarkarr[$i]);
}else{
array_push($tmp_remark, null);
}
}
}
}
}
$remarkarr = $tmp_remark;
return $r_file_name;
}
}