Witajcie,

Próbuję napisać prymitywny skrypcik, który po wgraniu pliku graficznego na serwer zmieni jego rozmiar i zapisze miniaturę w katalogu podrzędnym o nazwie thumb.

Problem jest tego typu, że skrypt (resize.php) jest zapisany w innym katalogu (admin) a wgrane pliki graficzne w innym (files/products), kiedy plik resize.php i plik graficzny (np. example.jpg) są w tym samym katalogu nie ma problemu, natomiast kiedy podaję ścieżkę relatywną (../file/products/example.jpg) do pliku graficznego dostaję komunikat:

Error Invalid Image Type

Czy jest jakaś rada jak to "ugryść" Czy plik resize.php musi być w katalogu z obrazkami?



Kod resize.php - http://scripts.ringsworld.com/image-handli...resize.php.html

[PHP] pobierz, plaintext 
<?php
 
/*
    Version 1.0 Created by: Ryan Stemkoski
    Questions or comments: ryan <at> ipowerplant <dot> com
    Visit us on the web at: http://www.ipowerplant.com
    Purpose:  This script can be used to resize one or more images.  It will save the file to a directory and output the path to that directory which you 
              can display or write to a databse. 
    
    TO USE,  SET: 
        $filename = image to be resized
        $newfilename = added to filename to for each use to keep from overwriting images created example thumbnail_$filename is how it will be saved.
        $path = where the image should be stored and accessed. 
        $newwidth = resized width could be larger or smaller
        $newheight = resized height could be larger or smaller
        
    SAMPLE OF FUNCTION: makeimage('image.jpg', 'fullimage_', 'imgs/', 250, 250)
    
    Include the file containing the function in your document and simply call the function with the correct parameters and your image will be resized.
    
*/
 
//IMAGE RESIZE FUNCTION FOLLOW ABOVE DIRECTIONS
function makeimage($filename, $newfilename, $path, $newwidth, $newheight) {
 
    //SEARCHES IMAGE NAME STRING TO SELECT EXTENSION (EVERYTHING AFTER . )
    $image_type = strstr($filename,  '.');
 
    //SWITCHES THE IMAGE CREATE FUNCTION BASED ON FILE EXTENSION
        switch($image_type) {
            case '.jpg':
                $source = imagecreatefromjpeg($filename);
                break;
            case '.png':
                $source = imagecreatefrompng($filename);
                break;
            case '.gif':
                $source = imagecreatefromgif($filename);
                break;
            default:
                echo("Error Invalid Image Type");
                die;
                break;
            }
 
    //CREATES THE NAME OF THE SAVED FILE
    $file = $newfilename . $filename;
 
    //CREATES THE PATH TO THE SAVED FILE
    $fullpath = $path . $file;
 
    //FINDS SIZE OF THE OLD FILE
    list($width,  $height) = getimagesize($filename);
 
    //CREATES IMAGE WITH NEW SIZES
    $thumb = imagecreatetruecolor($newwidth,  $newheight);
 
    //RESIZES OLD IMAGE TO NEW SIZES
    imagecopyresized($thumb,  $source,  0,  0,  0,  0,  $newwidth,  $newheight,  $width,  $height);
 
    //SAVES IMAGE AND SETS QUALITY || NUMERICAL VALUE = QUALITY ON SCALE OF 1-100
    imagejpeg($thumb,  $fullpath,  60);
 
    //CREATING FILENAME TO WRITE TO DATABSE
    $filepath = $fullpath;
 
    //RETURNS FULL FILEPATH OF IMAGE ENDS FUNCTION
    return $filepath;
 
}
 
?> 
[PHP] pobierz, plaintext 

Kod sprawdzający test.php

[PHP] pobierz, plaintext 
<?php
 
	include ('resize.php');
 
	$image = 'example.jpg';
	$rootpath = '../files/products/';
 
	echo $rootpath.$image."<br><br><br>";
 
	if (file_exists($rootpath.$image)) {
    echo "Plik " .$image. " istnieje<br><br>";
	echo "Próbuję utworzyć miniaturę ".$image."<br><br>";
 
	makeimage($rootpath.$image, '', '../files/products/thumb/', 67, 67);
 
	echo $filepath;
 
	} else {
    echo "The file " .$image. " does not exist";
	}	
?>
[PHP] pobierz, plaintext 

W jakim katalogu znajduje się plik test.php?

test.php tez w katalogu admin. Wszystkie pliki php znajdują si w katalogu: admin natomiast wszystkie pliki graficzne znajdują się w katalogu: file/products/

[HTML] pobierz, plaintext 
/public_html
|
--- admin/
    |
    --- test.php
    --- resize.php
--- files/
    |
    --- products/
        |
        --- example.jpg
        |
           --- thumb/
               |
                 --- example.jpg
[HTML] pobierz, plaintext 

zastosuj funkcję explode() zamiast strstr().
Jeśli się nie mylę podajesz plik jako zlepek path i nazwy pliku, więc w przypadku relatywnej ścieżki '../files/products/example.jpg' $image_type = strstr($filename, '.'); zwraca ci najpewniej '../files/products/example.jpg' , a nie '.jpg'

Przerobiłem trochę skrypty.
test.php

[PHP] pobierz, plaintext 
<?php
 
	include ('resize.php');
 
	$image = 'example.jpg';
	$rootpath = '../files/products/';
 
	echo $rootpath.$image."<br><br><br>";
 
	if (file_exists($rootpath.$image)) {
    echo "Plik " .$image. " istnieje<br><br>";
	echo "Próbuję utworzyć miniaturę ".$image."<br><br>";
 
	$filepath=makeimage($rootpath.$image, $image, '../files/products/thumb/', 67, 67);
 
	echo $filepath;
 
	} else {
    echo "The file " .$image. " does not exist";
	}	
?>
[PHP] pobierz, plaintext 

[PHP] pobierz, plaintext 
<?php
 
/*
    Version 1.0 Created by: Ryan Stemkoski
    Questions or comments: ryan <at> ipowerplant <dot> com
    Visit us on the web at: http://www.ipowerplant.com
    Purpose:  This script can be used to resize one or more images.  It will save the file to a directory and output the path to that directory which you 
              can display or write to a databse. 
    
    TO USE,  SET: 
        $filename = image to be resized
        $newfilename = added to filename to for each use to keep from overwriting images created example thumbnail_$filename is how it will be saved.
        $path = where the image should be stored and accessed. 
        $newwidth = resized width could be larger or smaller
        $newheight = resized height could be larger or smaller
        
    SAMPLE OF FUNCTION: makeimage('image.jpg', 'fullimage_', 'imgs/', 250, 250)
    
    Include the file containing the function in your document and simply call the function with the correct parameters and your image will be resized.
    
*/
 
//IMAGE RESIZE FUNCTION FOLLOW ABOVE DIRECTIONS
function makeimage($filename, $newfilename, $path, $newwidth, $newheight) {
 
    //SEARCHES IMAGE NAME STRING TO SELECT EXTENSION (EVERYTHING AFTER . )
 
	$extension=substr($filename, -4);
	if($extension=='.jpg' || $extension=='.gif' ||$extension=='.png')$image_type=$extension;
	elseif($extension=='jpeg') $image_type='.jpg';
 
 
 
 
    //SWITCHES THE IMAGE CREATE FUNCTION BASED ON FILE EXTENSION
        switch($image_type) {
            case '.jpg':
                $source = imagecreatefromjpeg($filename);
                break;
            case '.png':
                $source = imagecreatefrompng($filename);
                break;
            case '.gif':
                $source = imagecreatefromgif($filename);
                break;
            default:
                echo("Error Invalid Image Type");
                die;
                break;
            }
 
    //CREATES THE NAME OF THE SAVED FILE
    $file = $newfilename;
 
    //CREATES THE PATH TO THE SAVED FILE
    $fullpath = $path . $file;
 
    //FINDS SIZE OF THE OLD FILE
    list($width,  $height) = getimagesize($filename);
 
    //CREATES IMAGE WITH NEW SIZES
    $thumb = imagecreatetruecolor($newwidth,  $newheight);
 
    //RESIZES OLD IMAGE TO NEW SIZES
    imagecopyresized($thumb,  $source,  0,  0,  0,  0,  $newwidth,  $newheight,  $width,  $height);
 
    //SAVES IMAGE AND SETS QUALITY || NUMERICAL VALUE = QUALITY ON SCALE OF 1-100
    imagejpeg($thumb,  $fullpath,  60);
 
 
 
    //RETURNS FULL FILEPATH OF IMAGE ENDS FUNCTION
    return $fullpath;
 
}
 
?> 
[PHP] pobierz, plaintext 

Do rozpoznawania typu zdjęć można też zastosować mime_content_type() lub finfo_file() w połączeniu z funkcją zamieniającą mime_type w rozszerzenie pliku.

Pozdrawiam,

Szeszek1992.

Bardzo dziękuję za pomoc Panowie, wszystko chodzi jak należy