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Imagick::identifyImage

(PECL imagick 2, PECL imagick 3)

Imagick::identifyImageIdentifie une image et lit ses attributs

Description

public Imagick::identifyImage(bool $appendRawOutput = false): array

Identifie une image et retourne ses attributs. Les attributs sont sa largeur, hauteur, taille et d'autres.

Liste de paramètres

appendRawOutput

Si true, la sortie brute est ajoutée au tableau

Valeurs de retour

Identifie une image et retourne ses attributs. Les attributs sont sa largeur, hauteur, taille et d'autres.

Erreurs / Exceptions

Lance une exception ImagickException si une erreur survient.

Exemple #1 Exemple de format du résultat

Array
(
    [imageName] => /some/path/image.jpg
    [format] => JPEG (Joint Photographic Experts Group JFIF format)
    [geometry] => Array
        (
            [width] => 90
            [height] => 90
        )

    [type] => TrueColor
    [colorSpace] => RGB
    [resolution] => Array
        (
            [x] => 300
            [y] => 300
        )

    [units] => PixelsPerInch
    [fileSize] => 1.88672kb
    [compression] => JPEG
    [signature] => 9a6dc8f604f97d0d691c0286176ddf992e188f0bebba98494b2146ee2d7118da
)

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User Contributed Notes 3 notes

up
0
rhuanpachecok at gmail dot com
3 years ago
I have created a function to parse the "rawOutput" because the information provided by this function is quite useless.

function parseIdentify($info) {
$lines = explode("\n", $info);

$outputs = [];
$output = [];
$keys = [];

$currSpaces = 0;
$raw = false;

foreach($lines as $line) {
$trimLine = trim($line);

if(empty($trimLine)) continue;

if($raw) {
preg_match('/^[0-9]+:\s/', $trimLine, $match);

if(!empty($match)) {
$regex = '/([\d]+):';
$regex .= '\s(\([\d|\s]{1,3},[\d|\s]{1,3},[\d|\s]{1,3},[\d|\s]{1,3}\))';
$regex .= '\s(#\w+)';
$regex .= '\s(srgba\([\d|\s]{1,3},[\d|\s]{1,3},[\d|\s]{1,3},[\d|\s|.]+\)|\w+)/';

preg_match($regex, $trimLine, $matches);
array_shift($matches);

$output['Image'][$raw][] = $matches;

continue;
}

else {
$raw = false;
array_pop($keys);
}
}

preg_match('/^\s+/', $line, $match);

$spaces = isset($match[0]) ? strlen($match[0]) : $spaces = 0;
$parts = preg_split('/:\s/', $trimLine, 2);

$_key = ucwords($parts[0]);
$_key = str_replace(' ', '', $_key);
$_val = isset($parts[1]) ? $parts[1] : [];

if($_key == 'Image') {
if(!empty($output)) {
$outputs[] = $output['Image'];
$output = [];
}

$_val = [];
}

if($spaces < $currSpaces) {
for($i = 0; $i < ($currSpaces - $spaces) / 2; $i++) {
array_pop($keys);
}
}

if(is_array($_val)) {
$_key = rtrim($_key, ':');
$keys[] = $_key;

if($_key == 'Histogram' || $_key == 'Colormap') {
$raw = $_key;
}
}

$currSpaces = $spaces;
$arr = &$output;

foreach($keys as $key) {
if(!isset($arr[$key])) {
$arr[$key] = $_val;
}

$arr = &$arr[$key];
}

if(!is_array($_val)) {
$arr[$_key] = $_val;
}

}

$outputs[] = $output['Image'];

return count($outputs) > 1 ? $outputs : $outputs[0];
}

Usage example:

$img = new Imagick('example.png');
$identify = parseIdentify($img->identifyImage(true)['rawOutput']);

But the "rawOutput" that this function returns only contains the first frame if it is a GIF. Alternatively you can use the command "identify" to get the data of all the frames:

$identify = parseIdentify(shell_exec('identify -verbose example.gif'));
up
0
php at ontheroad dot net dot nz
13 years ago
If you use the option to append the raw output, you can extract the mime type from there. I'm not sure what's going on in the background here, but it seems far less useful than the command line identify tool.
up
0
rob at OhReally dot nl
15 years ago
The array returned by Imagick::identifyImage():

Array
(
[imageName] => /some/path/image.jpg
[format] => JPEG (Joint Photographic Experts Group JFIF format)
[geometry] => Array
(
[width] => 90
[height] => 90
)

[type] => TrueColor
[colorSpace] => RGB
[resolution] => Array
(
[x] => 300
[y] => 300
)

[units] => PixelsPerInch
[fileSize] => 1.88672kb
[compression] => JPEG
[signature] => 9a6dc8f604f97d0d691c0286176ddf992e188f0bebba98494b2146ee2d7118da
)

Looks like the only way to get the mimetype is getimagesize()...
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