upload file with php and save path to sql

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Does anyone know any good tutorial on how to upload a file with php and save the files path to a sql server?

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2条回答

情话喂你

2020-12-06 04:05

From http://www.w3schools.com/php/php_file_upload.asp

HTML

<html>
<body>

<form action="upload_file.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" /> 
<br />
<input type="submit" name="submit" value="Submit" />
</form>

</body>
</html>

PHP

<?php
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    }
  else
    {   
    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"]; //<- This is it
      }
    }
?>

Note that to upload the file you need to specify the path to save the file. If you save the file you already know it path.

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情书的邮戳

2020-12-06 04:23
To upload a file you need at least a HTML POST form with multipart/form-data encoding. Therein you put an input type="file" field to browse the file and a submit button to submit the form.
```
<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <input type="submit">
</form>
```
In the upload.php the uploaded file is accesible by $_FILES with the field name as key.
```
$file = $_FILES['file'];
```
You can get its name as follows:
```
$name = $file['name'];
```
You need to move it to a permanent location using move_uploaded_file(), else it will get lost:
```
$path = "/uploads/" . basename($name);
if (move_uploaded_file($file['tmp_name'], $path)) {
    // Move succeed.
} else {
    // Move failed. Possible duplicate?
}
```
You can store the path in database the usual way:
```
$sql = "INSERT INTO file (path) VALUES ('" . mysqli_real_escape_string($path) . "')";
// ...
```
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