Ciao, l'avevo provato ma non funzia, ti posto il codice:
Codice PHP:
$destimg1 = imagecreatetruecolor(120, 120);
$bianco = imagecolorallocate($destimg1, 255, 255, 255);
$destimg =  imagefilledrectangle($destimg1, 1, 1, 120, 120, $bianco);
                                            
                                            
$srcimg = ImageCreateFromJPEG($source_path.$nome_big); 
imagecopyresampled($destimg, $srcimg, $distanza_w, $distanza_h, 0, 0, $thumb_w, $thumb_h, ImageSX($srcimg), ImageSY($srcimg)); 
imagejpeg($destimg,$dest_path.$nomeimage,100); 

$r_datab_m = $nomeimage;
                                            
imagedestroy($destimg);
imagedestroy($srcimg); 
mi dà il seguente errore:
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 101

Warning: imagejpeg(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 102

Warning: imagedestroy(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 106

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 101

Warning: imagejpeg(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 102

Warning: imagedestroy(): supplied argument is not a valid Image resource in /var/www/miosito/inc/funzioni.php on line 106