php 带文件上传的表单（可选文件上传）
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<?php
// require DB config + constants
require "dbconfig.php";
if($_SERVER['REQUEST_METHOD'] == 'POST') {
echo 'POST ARRAY<pre>';
print_r($_POST);
echo '</pre>';
echo "<br>====================<br>";
echo 'FILES ARRAY<pre>';
print_r($_FILES);
echo '</pre>';
echo "<br>====================<br>";
echo 'Detailed info:<br>';
echo $_FILES['filelogo']['name'] . '<br>' ;
echo $_FILES['filelogo']['type'] . '<br>' ;
echo $_FILES['filelogo']['tmp_name'] .'<br>' ;
echo $_FILES['filelogo']['error'] .'<br>' ;
echo $_FILES['filelogo']['size'] .'<br>' ;
// exit;
try {
$db = new PDO($dsn, $username, $password);
// specify the directory
$targetDir = "fileuploads/";
// Allow only these extensions
$allowed = ['gif','png', 'jpg'] ;
// POST values
$name = $_POST['name'] ;
$email = $_POST['email'] ;
$file_name = '' ;
// if user didnt provide file to upload
if ( $_FILES['filelogo']['name'] != '' ) {
$file_name = $_FILES['filelogo']['name']; // cherry_blossom.jpg
$targetFile = $targetDir.$file_name; // fileuploads/cherry_blossom.jpg
// Get the extension name
$extension = explode('.', $_FILES['filelogo']['name'] ) ;
$extension = strtolower(end($extension) ) ;
if( in_array($extension, $allowed ) ) {
move_uploaded_file( $_FILES['filelogo']['tmp_name'] , $targetFile );
}
else {
echo "<h2>Errors uploading file:</h2> ";
echo $_FILES['filelogo']['error'];
exit;
}
}
//insert data form, with file_name(optional, default=NULL)
$query = 'INSERT INTO singleupload ( name, email, file_name, dateuploaded )
VALUES ( :name, :email, :file_name, :dateuploaded ) ';
$statement = $db->prepare($query);
$statement->bindValue(':name', $name );
$statement->bindValue(':email', $email );
$statement->bindValue(':file_name', $file_name );
$statement->bindValue(':dateuploaded', date("Y-m-d H:i:s") );
// $statement->execute();
$statement->execute() or die(print_r( $statement->errorInfo(), true) );
echo '<h2>FILE INSERT SUCCESSFUL</h2>';
$statement->closeCursor();
} catch (PDOException $e) {
// print trace
$error_message = $e->getMessage();
exit();
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title></title>
<script src="https://code.jquery.com/jquery-1.8.3.js"></script>
<!--[if IE]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<body>
<form method="post" action="" enctype="multipart/form-data">
<div><input type="text" name="name" placeholder="Full Name"></div>
<div><input type="text" name="email" placeholder="Email"></div>
<div><input id="filelogo" type="file" name="filelogo"></div>
<p><br></p>
<img id="showimage" src="" height="200" alt="Image preview...">
<input type="submit" value="SUBMIT">
</form>
</body>
<script>
$("#filelogo").change(function() {
var preview = document.querySelector('#showimage');
var file = document.querySelector('input[type=file]').files[0];
var reader = new FileReader();
// console.log(file) ;
if( $('#filelogo').val() !=""){
// readURL function is redundant so we just use reader.onload if the file size is less than 1MB
// 'this' refers to the current file object
// check if file size is greater than 1MB OR file is not an image
if (file.size>=1000000 ) {
alert("File upload limit is 1MB ") ;
}
else if ( file['type'].split('/')[0] !='image' ) {
alert('File is not an image, only [gif,png, jpg] are allowed') ;
}
else {
reader.addEventListener("load", function () {
preview.src = reader.result;
}, false);
if ( file ) { reader.readAsDataURL(file); }
}
}
/* optional
triggers when a file selection is cancelled or there is no image currently selected
*/
/*
else {
//
console.log("File selection cancelled, loading default placeholder.png") ;
$('#showimage').attr('src','https://regigo.com/beta/organizer/images/placeholder.png');
}
*/
});
</script>
</html>
================== DATABASE SCHEMA ===========================
Field Type NULL KEY Default Extra
------------------------------------------------------------------------
id int(11) NO PRI NULL auto_increment
name varchar(100) NO NULL
email varchar(100) NO NULL
file_name varchar(100) NO NULL
dateuplaoded date NO NULL
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