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1. ????? ?? ??? ?????.
2. ????? ?? ??? ?????. >
3. ?? ?? ??? ?? ??? ? ?? ???? ?? ???? ??4. ??? ?? ?? ????5. ??? ? ?? ?? PHP? ?? ??? ??? ???? ? ????. ? ?? ??? ??? ?????? ???????. ???? ??? ??? ????. test
|------upload # ???? ?? ???
|------form.html # ?? ??
|------upload_file.php # PHP ??? ??
?? ??? ?? ???
???? ???? ??? ???? ? ??? ???? ?? ?? ?????. ?? ???? ?? HTML ??? ?????.<html> <head> <meta charset="utf-8"> <title>php中文網(wǎng)(php.cn)</title> </head> <body> <form action="upload_file.php" method="post" enctype="multipart/form-data"> <label for="file">文件名：</label> <input type="file" name="file" id="file"><br> <input type="submit" name="submit" value="提交"> </form> </body> </html>? ??? form.html ??? ?????. ? HTML ??? ?? ?? ?? ??? ??? ????. <form> ??? enctype ??? ??? ??? ? ??? ??? ??? ?????. ??? ?? ???? ?? ???? ???? ??? ?? "multipart/form-data"? ?????. <input> ??? type="file" ??? ??? ??? ????? ?? ?????. ?? ?? ?????? ?? ? ? ?? ?? ?? ???? ??? ?????. ??: ???? ??? ?????? ???? ?? ??? ?? ??? ?????. ??? ? ?? ???? ?? ??? ??? ????? ??????.
??? ???? ???
"upload_file.php" ???? ?? ???? ?? ??? ???? ????:<?php
if ($_FILES["file"]["error"] > 0)
{
echo "錯誤：" . $_FILES["file"]["error"] . "<br>";
}
else
{
echo "上傳文件名: " . $_FILES["file"]["name"] . "<br>";
echo "文件類型: " . $_FILES["file"]["type"] . "<br>";
echo "文件大小: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "文件臨時存儲的位置: " . $_FILES["file"]["tmp_name"];
}
?>PHP? ?? ?? $_FILES ??? ???? ????? ????? ?? ??? ??? ???? ? ????. ? ?? ????? ??? ?? ???? ? ?? ??? "name", "type", "size", "tmp_name" ?? "error"? ? ????. ??? ??: $_FILES["file"]["name"] - ???? ??? ?? $_FILES["file"]["type"] - ?? ???? ?? $_FILES["file"]["size"] - ???? ??? ??(???) $_FILES["file"]["tmp_name"] - ??? ??? ?? ??? ?? ??? ?? $_FILES["file"]["error"] - ?? ???? ?? ?? ??
??? ??? ????? ?? ??? ?????. ???? ??? ?? ???? ???? ??? ?? ??? ???? ???.
??? ??
? ??????? ?? ???? ??? ??????. ???? .gif, .jpeg, .jpg, .png ??? ???? ? ??? ?? ??? 200kB ????? ???.
<?php
// 允許上傳的圖片后綴
$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp); // 獲取文件后綴名
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 204800) // 小于 200 kb
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "錯誤：: " . $_FILES["file"]["error"] . "<br>";
}
else
{
echo "上傳文件名: " . $_FILES["file"]["name"] . "<br>";
echo "文件類型: " . $_FILES["file"]["type"] . "<br>";
echo "文件大小: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "文件臨時存儲的位置: " . $_FILES["file"]["tmp_name"];
}
}
else
{
echo "非法的文件格式";
}
?>???? ?? ??
? ????? ??? PHP ?? ??? ???? ??? ?? ???? ?????.
? ?? ???? ????? ??? ?????. ???? ??? ????? ?? ??? ???? ???:
<?php
// 允許上傳的圖片后綴
$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
echo $_FILES["file"]["size"];
$extension = end($temp); // 獲取文件后綴名
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 204800) // 小于 200 kb
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "錯誤：: " . $_FILES["file"]["error"] . "<br>";
}
else
{
echo "上傳文件名: " . $_FILES["file"]["name"] . "<br>";
echo "文件類型: " . $_FILES["file"]["type"] . "<br>";
echo "文件大小: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
echo "文件臨時存儲的位置: " . $_FILES["file"]["tmp_name"] . "<br>";
// 判斷當期目錄下的 upload 目錄是否存在該文件
// 如果沒有 upload 目錄，你需要創(chuàng)建它，upload 目錄權(quán)限為 777
if (file_exists("upload/" . $_FILES["file"]["name"]))
{
echo $_FILES["file"]["name"] . " 文件已經(jīng)存在。 ";
}
else
{
// 如果 upload 目錄不存在該文件則將文件上傳到 upload 目錄下
move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" . $_FILES["file"]["name"]);
echo "文件存儲在: " . "upload/" . $_FILES["file"]["name"];
}
}
}
else
{
echo "非法的文件格式";
}
?>? ????? ??? ?? ????? ?????. ??? ??? "upload"?? ????? ??? ?????. .
?? ??? ?? ??? ??? ????.
