Imagick::getImageProfiles
The getImageProperties function in PHP returns an array of property keys available for an image. To get these property values, you use getImageProperty function, giving it one of the available keys provided by the getImageProperties function result. For some images, you may have a lot of properties and for some, you may have few. The two that almost every image seems to have are "date:create" and "date:modify", but some images may have forty or more properties, some titled "exif:Compression", "photoshop:Credit", "jpeg:colorspace", "rdf:Alt", "stRef:documentID", and "xap:CreatorTool." PNG files will also have properties like "png:IHDR.bit_depth" and "png:IHDR.width,height." So far, it appears generally that GIF and BMP files, being simpler, have fewer properties, whereas JPEG and PNG files, being more complicated, have much wider array of properties. It seems incredibly useful in document management.
And now, some sample code and results :
<?php
// Author: holdoffhunger@gmail.com
// Imagick Type
// ---------------------------------------------
$imagick_type = new Imagick();
// Open File
// ---------------------------------------------
$file_to_grab = "image_workshop_directory/test.png";
$file_handle_for_viewing_image_file = fopen($file_to_grab, 'a+');
// Grab File
// ---------------------------------------------
$imagick_type->readImageFile($file_handle_for_viewing_image_file);
// Get Image Properties
// ---------------------------------------------
$imagick_type_properties = $imagick_type->getImageProperties('*', FALSE);
// Print Image Properties
// ---------------------------------------------
print("<pre>");
print_r($imagick_type_properties);
// Print Each Individual, Image Property
// ---------------------------------------------
foreach($imagick_type_properties as $value)
{
print("$value --- ");
print($imagick_type->getImageProperty("$value"));
print("<br><br>");
}
print("</pre>");
?>
Results of this done on a standard PNG image :
Array
(
[0] => date:create
[1] => date:modify
[2] => png:cHRM
[3] => png:gAMA
[4] => png:IHDR.bit_depth
[5] => png:IHDR.color_type
[6] => png:IHDR.interlace_method
[7] => png:IHDR.width,height
[8] => png:sRGB
)
date:create --- 2012-05-19T18:26:45-05:00
date:modify --- 2012-05-19T18:26:45-05:00
png:cHRM --- chunk was found (see Chromaticity, above)
png:gAMA --- gamma=0.45455 (See Gamma, above)
png:IHDR.bit_depth --- 8
png:IHDR.color_type --- 2
png:IHDR.interlace_method --- 0
png:IHDR.width,height --- 320, 320
png:sRGB --- intent=0 (See Rendering intent)
Imagick::getImageProperties
(PECL imagick 2.0.0)
Imagick::getImageProperties — 画像のプロパティを返す
説明
array Imagick::getImageProperties
([ string
$pattern = "*"
[, bool $only_names = true
]] )
関連付けられているプロパティのうち、パターンにマッチするものをすべて返します。
二番目の引数を TRUE にすると、プロパティの名前だけを返します。
このメソッドは、ImageMagick バージョン 6.3.6 以降で Imagick をコンパイルした場合に使用可能です。
パラメータ
-
pattern -
プロパティ名のパターン。
-
only_names -
プロパティ名のみを返すかどうか。
FALSEの場合は値も返します。
返り値
画像のプロパティあるいはプロパティ名を含む連想配列を返します。
例
例1 Imagick::getImageProperties() の使用法
EXIF 情報を抽出します。
<?php
/* オブジェクトを作成します */
$im = new imagick("/path/to/example.jpg");
/* EXIF 情報を取得します */
$exifArray = $im->getImageProperties("exif:*");
/* EXIF のプロパティをループします */
foreach ($exifArray as $name => $property)
{
echo "{$name} => {$property}<br />\n";
}
?>
add a note
User Contributed Notes
Imagick::getImageProperties
holdoffhunger at gmail dot com
19-May-2012 11:29
www dot query at gmail dot com
08-Sep-2011 11:58
To access a photograph's EXIF data an alternative method is the normal PHP Exif function.
<?php
$exif_data = exif_read_data($pic1);
$edate = $exif_data['DateTime'];
?>
See: http://php.net/manual/en/book.exif.php
mhufford
03-Aug-2009 02:03
ImageMagick only supports setting a very small number of EXIF properties.
See http://www.imagemagick.org/discourse-server/viewtopic.php?t=14234