検索ワード: getimagesize (フランス語 - 英語)

getimagesize
gd_info

exemple avec getimagesize()
?php $size = getimagesize ("http: / /www.example.com / gifs / logo.gif");?

voir aussi getimagesize().
see also getimagesize().

voir getimagesize() pour un exemple.
see getimagesize() for a sample.

exemple 2. getimagesize() avec une url
however, the presence of these values can be a bit confusing.

la fonction getimagesize() doit être activée
getimagesize() function need to be enabled

exemple 3. getimagesize() qui retourne iptc
example 4. getimagesize() returning iptc

?php $size = getimagesize( "img / flag.jpg");?
with jpg images, two extra indexes are returned: channels and bits. channels will be 3 for rgb pictures and 4 for cmyk pictures. bits is the number of bits for each color.

getimagesize() retourne un tableau de 4 éléments.
index 2 is a flag indicating the type of the image:

?php $size = getimagesize( "http: / /www.php.net / gifs / logo.gif");?
as an example, gif always uses 3 channels per pixel, but the number of bits per pixel cannot be calculated for an animated gif with a global color table.

la valeur retournée est la même que celle que retourne getimagesize() dans son index 2, mais exif_imagetype() est bien plus rapide.
the return value is the same value that getimagesize() returns in index 2 but this function is much faster.

si l'accès à filename est impossible, ou si ce n'est pas une image valide, getimagesize() retournera null et générera une alerte.
this information can be used to deliver images with correct http content-type headers:

?php $size = getimagesize( "testimg.jpg", $info); if (isset($info["app13"])) {$iptc = iptcparse($info["app13"]); var_dump($iptc);}?
note: