您好我有一张表格要求用户上传照片。在imagecreatefromjpg和imagecopyresampled中使用照片作为第二张图像（图像在另一张图像的顶部）。但似乎上传的图像没有得到正确的处理。如果没有上传文件，也不会从服务器传递默认图像。我得到这些错误：
Warning</b>: imagecreatefromjpeg() [<a href='function.imagecreatefromjpeg'>function.imagecreatefromjpeg</a>]: Filename cannot be empty in <b>/home/content/52/12096052/html/Testupdate/processor.php</b> on line <b>117</b>
Warning</b>: imagesx() expects parameter 1 to be resource, boolean given in <b>/home/content/52/12096052/html/Testupdate/processor.php</b> on line <b>145</b><br />
Warning</b>: imagesy() expects parameter 1 to be resource, boolean given in /home/content/52/12096052/html/Testupdate/processor.php</b> on line <b>145</b><br />
<b>Warning</b>: imagecopyresampled() expects parameter 2 to be resource, boolean given in /home/content/52/12096052/html/Testupdate/processor.php</b> on line <b>145</b><br />
<b>Warning</b>: Cannot modify header information - headers already sent by (output started at /home/content/52/12096052/html/Testupdate/processor.php:117) in <b>/home/content/52/12096052/html/Testupdate/processor.php</b> on line <b>186</b><br />
这是我的代码processor.php：
$con = mysql_connect($hostname, $username, $password) OR DIE ("Unable to
connect to database! Please try again later.");
mysql_select_db($dbname);
// make a note of the current working directory, relative to root.
$directory_self = str_replace(basename($_SERVER['PHP_SELF']), '', $_SERVER['PHP_SELF']);
// make a note of the directory that will recieve the uploaded files //i made it as the same directory where the .php file is
$uploadsDirectory = $_SERVER['DOCUMENT_ROOT'] . $directory_self;
// make a note of the location of the upload form in case we need it
$uploadForm = 'https://' . $_SERVER['HTTP_HOST'] . $directory_self . 'index.php';
// name of the fieldname used for the file in the HTML form
$fieldname = 'file';
// check the upload form was actually submitted else print form
if(isset($_POST['submit']))
{
if($_FILES['file']['tmp_name']!="")
{
$allowedExts = array("jpeg", "jpg");
$temp = explode(".", $_FILES['file']['name']);
$extension = end($temp);
$notallowedExts = array("png", "gif", "pdf", "doc", "docx", "txt", "html", "xlsx", "mov");
$nottemp = explode(".", $_FILES['file']['name']);
$notextension = end($nottemp);
if ((($_FILES['file']['type'] == "image/jpeg") || ($_FILES['file']['type'] == "image/jpg")) && ($_FILES['file']['size'] < 1300000) && in_array($extension, $allowedExts))
{
$now = time();
while(file_exists($uploadFilename = $uploadsDirectory.$now.'-'.$_FILES[$fieldname]['name']))
{
$now++;
}
move_uploaded_file($_FILES[$fieldname]['tmp_name'], $uploadFilename);
}
elseif(($_FILES['file']['size'] > 1300000)||(in_array($notextension, $notallowedExts)))
{
echo '<script type="text/javascript">';
echo 'alert("Invalid file upload. Please check your input.");';
echo 'window.location.href = "index.php";';
echo '</script>';
die();
}
}
else
{
$uploadFilename = "def_img.jpg";
}
}
//for textbox input
$name = $_POST['name'];
$email = $_POST['email'];
$office_id = $_POST['office_id'];
$var_title = $_POST['title'];
$var_story = $_POST['story'];
$var_task = $_POST['task'];
$var_power = $_POST['power'];
$var_solve = $_POST['solve'];
$var_result = $_POST['result'];
$get_title = $_POST['title'];
$title = strtoupper ($get_title);
$namehere = "Super Story By " .$_POST['name'];
$story = "My super story begins with " . $_POST['story'] . " My task was " . $_POST['task'] ." With the super power of ". $_POST['power'] ." I solved it by ". $_POST['solve'] ." The result was ". $_POST['result'];
if (!empty($name) && !empty($email) && !empty($office_id) && !empty($title) && !empty($var_title) && !empty($var_story) && !empty($var_task) && !empty($var_power) && !empty($var_solve) && !empty($var_result)) {
header('Content-Type: image/jpeg');
$imagename = $uploadFilename;
$im = imagecreatefromjpeg("bg.jpg");
$img2 = imagecreatefromjpeg($imagename);
$black = imagecolorallocate($im, 0, 0, 0);
$font = 'arialbi.ttf';
$font2 = 'ariali.ttf';
$newtitle = wordwrap($title, 24, "\n", true);
$newertitle = explode("\n", $newtitle);
imagettftext($im, 33, 0, 8, 270, $black, $font, $newertitle[0]);
imagettftext($im, 33, 0, 8, 320, $black, $font, $newertitle[1]);
imagettftext($im, 12, 0, 283, 365, $black, $font, $namehere);
$newtext = wordwrap($story, 50, "\n", true);
$newertext = explode("\n", $newtext);
imagettftext($im, 10, 0, 283, 385, $black, $font2, $newertext[0]);
imagettftext($im, 10, 0, 283, 400, $black, $font2, $newertext[1]);
imagettftext($im, 10, 0, 283, 415, $black, $font2, $newertext[2]);
imagettftext($im, 10, 0, 283, 430, $black, $font2, $newertext[3]);
imagettftext($im, 10, 0, 283, 445, $black, $font2, $newertext[4]);
imagettftext($im, 10, 0, 283, 460, $black, $font2, $newertext[5]);
imagettftext($im, 10, 0, 283, 475, $black, $font2, $newertext[6]);
imagettftext($im, 10, 0, 283, 490, $black, $font2, $newertext[7]);
imagettftext($im, 10, 0, 283, 505, $black, $font2, $newertext[8]);
imagettftext($im, 10, 0, 283, 520, $black, $font2, $newertext[9]);
imagettftext($im, 10, 0, 283, 535, $black, $font2, $newertext[10]);
imagecopyresampled($im, $img2, 10, 350, 0, 0, 263, 175, imagesx($img2), imagesy($img2));
$date_created = date("YmdHis");//get date created
$img_name = "-img_entry.jpg"; //the file name of the generated image
$img_newname = $date_created . $img_name; //datecreated+name
$img_dir =dirname($_SERVER['SCRIPT_FILENAME']) ."/". $img_newname; //the location to save the image
imagejpeg($im, $img_dir , 80); //function to save the image with the name and quality
$newpath = "/home/content/52/12096052/html/Testupdate/image_entry/";
$newdir = $newpath.$img_newname;
copy ($img_dir, $newdir);
$http_dir = 'https://www.uaewebdeveloper.com/Testupdate/image_entry/';
$post_link = $http_dir . $img_newname;
$msg = 'Super Story by ';
$post_msg = $msg.$name;
imagedestroy($im);
}
else{
echo '<script type="text/javascript">';
echo 'window.alert("*All fields required.");';
echo 'window.location.href = "index.php";';
echo '</script>';
}
//get time to save in db
$sql_date = date("Y/m/d H:i:s");
//save inputs to db
if (!empty($name) && !empty($email) && !empty($office_id) && !empty($title) && !empty($story)) {
$save_sql = mysql_query("INSERT INTO `tbl_amatest` (filename, name, email, office_id, title, story, time) VALUES ('$img_newname','$name','$email','$office_id','$title','$story','$sql_date')");
header('Location:' .'success.html');
mysql_close($con);
}
当我将第二张图片指定为dafault时，它可以正常工作。但是当有人上传文件时，它会获得唯一的默认值而非上传内容。所以基本上，我有两个问题：
请帮帮我。我不知道该怎么办。我有阅读帖子，几乎一样，但它没有帮助我。非常感谢！
答案 0 :(得分：0)
尝试对代码进行主要的两项更改：
替换代码if（isset（$ _ FILES ['file'] ['tmp_name']））{ 使用if（$ _ FILES ['file'] ['tmp_name']！=“”）{
从默认图片中删除路径：$ uploadFilename ='def_img.jpg';
我已经尝试过它的工作正常了。完整的代码，我测试默认图像和上传的图像都可用于进一步处理。
$directory_self = str_replace(basename($_SERVER['PHP_SELF']), '', $_SERVER['PHP_SELF']);
// make a note of the directory that will recieve the uploaded files //i made it as the same directory where the .php file is
$uploadsDirectory = $_SERVER['DOCUMENT_ROOT'] . $directory_self;
#echo "$uploadsDirectory<br>";
#exit;
$fieldname = 'file';
if(isset($_POST['submit']))
{
if($_FILES['file']['tmp_name']!="")
{
$allowedExts = array("jpeg", "jpg");
$temp = explode(".", $_FILES['file']['name']);
$extension = end($temp);
$notallowedExts = array("png", "gif", "pdf", "doc", "docx", "txt", "html", "xlsx", "mov");
$nottemp = explode(".", $_FILES['file']['name']);
$notextension = end($nottemp);
if ((($_FILES['file']['type'] == "image/jpeg") || ($_FILES['file']['type'] == "image/jpg")) && ($_FILES['file']['size'] < 1300000) && in_array($extension, $allowedExts))
{
$now = time();
while(file_exists($uploadFilename = $uploadsDirectory.$now.'-'.$_FILES[$fieldname]['name']))
{
$now++;
}
move_uploaded_file($_FILES[$fieldname]['tmp_name'], $uploadFilename);
}
elseif(($_FILES['file']['size'] > 1300000)||(in_array($notextension, $notallowedExts)))
{
echo '<script type="text/javascript">';
echo 'alert("Invalid file upload. Please check your input.");';
echo 'window.location.href = "index.php";';
echo '</script>';
die();
}
}
else
{
$uploadFilename = "images.jpg";
}
}
/*$get_title = $_POST['title'];
$story = "My super story begins with " . $_POST['story'] . " My task was " . $_POST['task'] ." With the super power of ". $_POST['power'] ." I solved it by ". $_POST['solve'] ." The result was ". $_POST['result'];
if (!empty($name) && !empty($email) && !empty($office_id) && !empty($title) && !empty($var_title) && !empty($var_story) && !empty($var_task) && !empty($var_power) && !empty($var_solve) && !empty($var_result)) {
*/
echo " FILE : $uploadFilename";
//header('Content-Type: image/jpeg');
$upload = $uploadFilename;
$im = imagecreatefromjpeg("bg.jpg");
$img2 = imagecreatefromjpeg($upload);
$black = imagecolorallocate($im, 0, 0, 0);
$font = 'arialbi.ttf';
$font2 = 'ariali.ttf';
$newtitle = wordwrap($title, 24, "\n", true);
$newertitle = explode("\n", $newtitle);
imagettftext($im, 33, 0, 8, 270, $black, $font, $newertitle[0]);
imagettftext($im, 33, 0, 8, 320, $black, $font, $newertitle[1]);
imagettftext($im, 12, 0, 283, 365, $black, $font, $namehere);
$newtext = wordwrap($story, 50, "\n", true);
$newertext = explode("\n", $newtext);
imagettftext($im, 10, 0, 283, 385, $black, $font2, $newertext[0]);
imagettftext($im, 10, 0, 283, 400, $black, $font2, $newertext[1]);
imagecopyresampled($im, $img2, 10, 350, 0, 0, 263, 175, imagesx($img2), imagesy($img2));
$date_created = date("YmdHis");//get date created
$img_name = "-img_entry.jpg"; //the file name of the generated image
$img_newname = $date_created . $img_name; //datecreated+name
$img_dir =dirname($_SERVER['SCRIPT_FILENAME']) ."/". $img_newname; //the location to save the image
imagejpeg($im, $img_dir , 80); //function to save the image with the name and quality
$newpath = "/home/content/52/12096052/html/Testupdate/image_entry/";
$newdir = $newpath.$img_newname;
copy ($img_dir, $newdir); //copy to new folder
$http_dir = 'https://www.uaewebdeveloper.com/Testupdate/image_entry/';
$post_link = $http_dir . $img_newname;
$msg = 'Super Story by ';
$post_msg = $msg.$name;
imagedestroy($im);
//}