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Categorieën > PHP

upload en resize (Opgelost)

JeroenI - 14/03/2013 12:13 (laatste wijziging 14/03/2013 15:13)

PHP interesse

Hallo allemaal,

Ik wil via onderstaande code een foto kunnen uploaden, en direct resizen.

php code - Bekijk de code zonder highlighting - Klap code in

if(isset($_POST['submit']))
{
    if (isset ($_FILES['new_image']))
    {
        $imagename = $_FILES['new_image']['name'];
        $source = $_FILES['new_image']['tmp_name'];
        $target = "avatar/".$imagename;

        move_uploaded_file($source, $target);

        $imagepath = $imagename;
        $save = "avatar/" . $imagepath; //This is the new file you saving

        list($width, $height) = getimagesize($target);

        $modwidth = 100;
        $diff = $width / $modwidth;
        $modheight = $height / $diff;
        $tn = imagecreatetruecolor($modwidth, $modheight);
        $image = imagecreatefromjpeg($file);

        imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;
        imagejpeg($tn, $save, 100) ;
        unlink($target); //Delete our uploaded file

        echo "Large image: <img src='avatar/".$save."'><br>";
    }
}
?>

<form action="" method="post" enctype="multipart/form-data">
    <input name="new_image" id="new_image" size="30" type="file" class="fileUpload" />
    <button name="submit" type="submit" class="submitButton">Upload Image</button>
</form>

if(isset($_POST['submit']))
{
    if (isset ($_FILES['new_image']))
    {
        $imagename = $_FILES['new_image']['name'];
        $source = $_FILES['new_image']['tmp_name'];
        $target = "avatar/".$imagename;
 
        move_uploaded_file($source, $target);
 
        $imagepath = $imagename;
        $save = "avatar/" . $imagepath; //This is the new file you saving
 
        list($width, $height) = getimagesize($target);
 
        $modwidth = 100;
        $diff = $width / $modwidth;
        $modheight = $height / $diff;
        $tn = imagecreatetruecolor($modwidth, $modheight);
        $image = imagecreatefromjpeg($file);
 
        imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;
        imagejpeg($tn, $save, 100) ;
        unlink($target); //Delete our uploaded file
 
        echo "Large image: <img src='avatar/".$save."'><br>";
    }
}
?>
 
<form action="" method="post" enctype="multipart/form-data">
    <input name="new_image" id="new_image" size="30" type="file" class="fileUpload" />
    <button name="submit" type="submit" class="submitButton">Upload Image</button>
</form>

Nu krijg ik een error op regel 27 en 28, dat zijn deze twee:
$image = imagecreatefromjpeg($file) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;

namelijk error:
Warning: imagecreatefromjpeg() [function.imagecreatefromjpeg]: Filename cannot be empty in *** on line 27

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in *** on line 28

Ik weet eerlijk gezegd niet hoe ik dit kan fixen... ik werk niet zoveel met uploaden enzo, dus als iemand mij kan vertellen wat hier mis gaat ben ik erg blij.

Alvast bedankt!

2 antwoorden

Gesponsorde links

vinTage - 14/03/2013 12:32 (laatste wijziging 14/03/2013 12:34)
Nieuw lid		probeer je wel een jpg te uploaden? edit: ah $file bestaat niet in je script.

JeroenI - 14/03/2013 12:38 (laatste wijziging 14/03/2013 15:53)

PHP interesse

Waar moet $file naartoe verwijzen dan ? Moet dat toevallig gekoppeld worden aan $_FILES['new_image']['name']; ?

[offtopic]
Vintage waarom sta jij op zowel online als offline?

edit
Ik heb nu dit

php code - Bekijk de code zonder highlighting - Klap code in

if(isset($_POST['submit'])){
if (isset ($_FILES['new_image'])){
$imagename = $_FILES['new_image']['name'];
$source = $_FILES['new_image']['tmp_name'];
$target = "avatar/".$imagename;

move_uploaded_file($source, $target);
$file = "avatar/" . $imagepath; //This is the original file 

$imagepath = $imagename;
$save = "avatar/" . $imagepath; //This is the new file you saving

list($width, $height) = getimagesize($target);

$modwidth = 100;
$diff = $width / $modwidth;
$modheight = $height / $diff;

$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($file) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;

imagejpeg($tn, $save, 100) ;
unlink($target); //Delete our uploaded file

echo "Large image: <img src='avatar/".$save."'><br>";
}
}

if(isset($_POST['submit'])){
if (isset ($_FILES['new_image'])){
$imagename = $_FILES['new_image']['name'];
$source = $_FILES['new_image']['tmp_name'];
$target = "avatar/".$imagename;
 
move_uploaded_file($source, $target);
$file = "avatar/" . $imagepath; //This is the original file 
 
$imagepath = $imagename;
$save = "avatar/" . $imagepath; //This is the new file you saving
 
list($width, $height) = getimagesize($target);
 
$modwidth = 100;
$diff = $width / $modwidth;
$modheight = $height / $diff;
 
$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($file) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;
 
imagejpeg($tn, $save, 100) ;
unlink($target); //Delete our uploaded file
 
echo "Large image: <img src='avatar/".$save."'><br>";
}
}

maar krijg nu volgende errors:
Warning: imagecreatefromjpeg(avatar/) [function.imagecreatefromjpeg]: failed to open stream: No such file or directory in *** on line 28

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in *** on line 29

edit #2

Ik heb nu deze code, zonder foutmeldingen maar hij plaatst het bestand ook niet in de map avatar

php code - Bekijk de code zonder highlighting - Klap code in

if(isset($_POST['submit'])){
if (isset ($_FILES['new_image'])){
$imagename = $_FILES['new_image']['name'];
$source = $_FILES['new_image']['tmp_name'];
$target = "avatar/".$imagename;

move_uploaded_file($source, $target);

$imagepath = $imagename;
$file = "avatar/" . $imagepath; //This is the original file 
$save = "avatar/" . $imagepath; //This is the new file you saving

list($width, $height) = getimagesize($target);

$modwidth = 100;
$diff = $width / $modwidth;
$modheight = $height / $diff;

$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($target) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;

imagejpeg($tn, $save, 100) ;
unlink($target); //Delete our uploaded file

echo "Large image: <img src='avatar/".$save."'><br>";
}
}

if(isset($_POST['submit'])){
if (isset ($_FILES['new_image'])){
$imagename = $_FILES['new_image']['name'];
$source = $_FILES['new_image']['tmp_name'];
$target = "avatar/".$imagename;
 
move_uploaded_file($source, $target);
 
$imagepath = $imagename;
$file = "avatar/" . $imagepath; //This is the original file 
$save = "avatar/" . $imagepath; //This is the new file you saving
 
list($width, $height) = getimagesize($target);
 
$modwidth = 100;
$diff = $width / $modwidth;
$modheight = $height / $diff;
 
$tn = imagecreatetruecolor($modwidth, $modheight) ;
$image = imagecreatefromjpeg($target) ;
imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;
 
imagejpeg($tn, $save, 100) ;
unlink($target); //Delete our uploaded file
 
echo "Large image: <img src='avatar/".$save."'><br>";
}
}

De rechten voor de map staan gewoon goed...

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