Salve, sapreste dirmi perchè questo script non funziona:

Codice PHP:
<?php
if(isset($_FILES['immagine'])){
        $x_thumb = 48;
        $temp = $_FILES['immagine']['tmp_name'];
        $dim = getimagesize($temp);
        $y_thumb = $dim[1]/$dim[0]*$x_thumb;
        $im = imagecreatetruecolor($x_thumb, $y_thumb);
        if ($dim[2] == 1)
                $im_or = imagecreatefromgif($temp);
        elseif($dim[2] == 2)
                $im_or = imagecreatefromjpeg($temp);
        elseif($dim[2] == 3)
                $im_or = imagecreatefrompng($temp);
        imagecopyresampled($im, $im_or, 0, 0, 0, 0, $x_thumb, $y_thumb, $dim[0], $dim[1]);
        imagejpeg($im,'immagine',70);
        imagedestroy($im_or);
        imagedestroy($im);
        // leggo la thumbnail appena creata per inserirla nel db
        $data = addslashes(fread(fopen('immagine.temp', 'rb'), filesize('immagine')));
        unlink('immagine');
} else {
        echo '
        <form action="prova.php" method="post" enctype="multipart/form-data">
        <input type="file" name="immagine" />
        <input type="submit" value="invia" />
        </form>
        ';
}?>

Io ho assegnato al file i privileggi 777, ma mi da errore quando eseguo lo script :


Warning: fopen(immagine.temp): failed to open stream: No such file or directory in /home/secaleys/public_html/test00/prova.php on line 19

Warning: fread(): supplied argument is not a valid stream resource in /home/secaleys/public_html/test00/prova.php on line 19



e mi genera un file nella cartella dove è situato lo script chiamato error_log con questo contenuto:

[28-Apr-2005 11:00:04] PHP Warning: fopen(immagine.temp): failed to open stream: No such file or directory in /home/secaleys/public_html/test00/prova.php on line 19
[28-Apr-2005 11:00:04] PHP Warning: fread(): supplied argument is not a valid stream resource in /home/secaleys/public_html/test00/prova.php on line 19
[28-Apr-2005 11:01:29] PHP Warning: fopen(immagine.temp): failed to open stream: No such file or directory in /home/secaleys/public_html/test00/prova.php on line 19
[28-Apr-2005 11:01:29] PHP Warning: fread(): supplied argument is not a valid stream resource in /home/secaleys/public_html/test00/prova.php on line 19