Imagick::identifyImage

(PECL imagick 2, PECL imagick 3)

Imagick::identifyImage — Identifica una imagen y obtiene sus atributos

Descripción

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

Identifica una imagen y devuelve los atributos. Los atributos incluyen el ancho, alto, tamaño de la imagen, entre otros.

Parámetros

appendRawOutput

Valores devueltos

Identifica una imagen y devuelve los atributos. Los atributos incluyen el ancho, alto, tamaño de la imagen, entre otros.

Ejemplo #1 Ejemplo de formato resultante

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
)

Errores/Excepciones

Lanza ImagickException en caso de error.

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User Contributed Notes 3 notes

down

rhuanpachecok at gmail dot com ¶

2 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'));

down

php at ontheroad dot net dot nz ¶

11 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.

down

rob at OhReally dot nl ¶

14 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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