smart_resize_image($sImage, null, 180, 270, false, $sResizedFile, false, false, 100);

<?php
if(!defined(PROTECTION_FICHIER) && PROTECTION_FICHIER != 'protection_Projet')
{
	header('Location: index.php');
}
 function smart_resize_image($file,
$width = 0,
$height = 0,
$proportional = false,
$output = 'file',
$delete_original = true,
$use_linux_commands = false ) {
if ( $height <= 0 && $width <= 0 ) return false;
# Setting defaults and meta
$info = getimagesize($file);
$image = '';
$final_width = 0;
$final_height = 0;
list($width_old, $height_old) = $info;
# Calculating proportionality
if ($proportional) {
if ($width == 0) $factor = $height/$height_old;
elseif ($height == 0) $factor = $width/$width_old;
else $factor = min( $width / $width_old, $height / $height_old );
$final_width = round( $width_old * $factor );
$final_height = round( $height_old * $factor );
}
else {
$final_width = ( $width <= 0 ) ? $width_old : $width;
$final_height = ( $height <= 0 ) ? $height_old : $height;
}
# Loading image to memory according to type
switch ( $info[2] ) {
case IMAGETYPE_GIF: $image = imagecreatefromgif($file); break;
case IMAGETYPE_JPEG: $image = imagecreatefromjpeg($file); break;
case IMAGETYPE_PNG: $image = imagecreatefrompng($file); break;
default: return false;
}
# This is the resizing/resampling/transparency-preserving magic
$image_resized = imagecreatetruecolor( $final_width, $final_height );
if ( ($info[2] == IMAGETYPE_GIF) || ($info[2] == IMAGETYPE_PNG) ) {
$transparency = imagecolortransparent($image);
if ($transparency >= 0) {
$transparent_color = imagecolorsforindex($image, $trnprt_indx);
$transparency = imagecolorallocate($image_resized, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);
imagefill($image_resized, 0, 0, $transparency);
imagecolortransparent($image_resized, $transparency);
}
elseif ($info[2] == IMAGETYPE_PNG) {
imagealphablending($image_resized, false);
$color = imagecolorallocatealpha($image_resized, 0, 0, 0, 127);
imagefill($image_resized, 0, 0, $color);
imagesavealpha($image_resized, true);
}
}
imagecopyresampled($image_resized, $image, 0, 0, 0, 0, $final_width, $final_height, $width_old, $height_old);
# Taking care of original, if needed
if ( $delete_original ) {
if ( $use_linux_commands ) exec('rm '.$file);
else @unlink($file);
}
# Preparing a method of providing result
switch ( strtolower($output) ) {
case 'browser':
$mime = image_type_to_mime_type($info[2]);
header("Content-type: $mime");
$output = NULL;
break;
case 'file':
$output = $file;
break;
case 'return':
return $image_resized;
break;
default:
break;
}
# Writing image according to type to the output destination
switch ( $info[2] ) {
case IMAGETYPE_GIF: imagegif($image_resized, $output); break;
case IMAGETYPE_JPEG: imagejpeg($image_resized, $output); break;
case IMAGETYPE_PNG: imagepng($image_resized, $output); break;
default: return false;
}
return true;
}
if( isset($_FILES['image']) && $_FILES['image']['error'] == 0)
{
    if( $_FILES['image']['size'] <= 1000000)
    {
    // Testons si l'extension est autorisée
 
            $infosfichier = pathinfo($_FILES['image']['name']);
            $extension_upload = $infosfichier['extension'];
            $extensions_autorisees = array('jpg', 'jpeg', 'gif', 'png');
 
            if (in_array($extension_upload, $extensions_autorisees))
            {  
			smart_resize_image($sImage, null, 180, 270, false, $sResizedFile, false, false, 100);
                $dossier = 'images/upload';
            $fichier = basename($_FILES['image']['name']);
 
            if(move_uploaded_file($_FILES['image']['tmp_name'], $dossier . $fichier)) //Si TRUE
                {
                    echo 'Upload effectué avec succès !';
                }
                else //Sinon (la fonction renvoie FALSE).
                {
                    echo 'Echec de l\'upload !';
                }
            }
            else
  {
                echo 'Erreur sur extension de fichier';
            }
    }
    else
    {
        echo 'Erreur sur taille fichier';
    }
}  
?>

smart_resize_image($sImage, null, 180, 270, false, $sResizedFile, false, false, 100);

<?php
if( isset($_FILES['image']) && $_FILES['image']['error'] == 0)
{
    if( $_FILES['image']['size'] <= 1000000)
    {
    // Testons si l'extension est autorisée
 
            $infosfichier = pathinfo($_FILES['image']['name']);
            $extension_upload = $infosfichier['extension'];
            $extensions_autorisees = array('jpg', 'jpeg', 'gif', 'png');
 
            if (in_array($extension_upload, $extensions_autorisees))
            {  
                $dossier = 'images/upload/';
            $fichier = basename($_FILES['image']['name']);
 
            if(move_uploaded_file($_FILES['image']['tmp_name'], $dossier . $fichier)) //Si TRUE
                {
                    echo ' Upload effectué avec succès !';
                }
                else //Sinon (la fonction renvoie FALSE).
                {
                    echo 'Echec de l\'upload !';
                }
            }
            else
  {
                echo 'Erreur sur extension de fichier';
            }
    }
    else
    {
        echo 'Erreur sur taille fichier';
    }
}  
?>
<div id="bloc">	
 <form method="post" enctype="multipart/form-data">
         <p>
        <input type="hidden" name="MAX_FILE_SIZE" value="1048576" />
        <input type="file" name="image"/>
        </p>
        <p>
            <input type="submit" value="Valider"/>
        </p>
    </form>
</div>