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    Imagick::identifyImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::identifyImage — 画像を識別し、属性を取得する

    説明

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

    画像を識別し、属性を返します。属性には画像の幅や高さ、サイズなどが含まれます。

    パラメータ

    appendRawOutput

    true の場合、生の出力が配列に追加されます。

    戻り値

    画像を識別し、属性を返します。属性には画像の幅や高さ、サイズなどが含まれます。

    エラー / 例外

    エラー時に ImagickException をスローします。

    例1 結果の書式の例

    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

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    0
    rhuanpachecok at gmail dot com
    4 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'));
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    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.
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    0
    rob at OhReally dot nl
    16 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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