If you have multiple displays set up, this function will only grab the primary display; not all of them like you would with the 'Print Screen' key.
Also, this should be pretty obvious but I'll mention it anyway, if you're running GPU-intensive applications (not CPU), calling this function will cause quite some significant lag to your machine and server response until the request is complete.
imagegrabscreen
(PHP 5 >= 5.2.2, PHP 7, PHP 8)
imagegrabscreen — 画面全体をキャプチャする
パラメータ
この関数にはパラメータはありません。
戻り値
成功した場合に画像オブジェクト、失敗した場合に false を返します。
例
例1 imagegrabscreen() の例
この例は、現在の画面の状態のスクリーンショットを取得してそれを png 画像として保存するものです。
<?php
$im = imagegrabscreen();
imagepng($im, "myscreenshot.png");
imagedestroy($im);
?>参考
- imagegrabwindow() - ウィンドウをキャプチャする
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User Contributed Notes 3 notes
Nitrogen ¶
14 years ago
divinity76 at gmail dot com ¶
5 years ago
if you for whatever reason need this in Cygwin, this can be done with the library at https://github.com/divinity76/autoit_php
- cygwin-compatible rough equivalent:
<?php
if(!function_exists("imagegrabscreen")){
function imagegrabscreen()/*:gd-resource*/{
require_once("autoit.class.php");
$au=new AutoIt();
$png_binary=$au->_ScreenCapture_Capture();
return imagecreatefromstring($png_binary);
}
}
(note that unlike the real imagegrabscreen() , this function may throw a RuntimeException if there is a problem taking the picture, or if autoit.class.php cannot be loaded)
andrew at local dot co dot nz ¶
16 years ago
For this to work your Apache service must be set to 'Allow service to interact with desktop' otherwise you will just get a blank image. To fix this right-click My Computer, select Manage/Services and Applications/Services - find the apache service (like Apache2) and right-click, select Properties - choose the Log on tab and check the 'Allow service to interact with desktop' checkbox. Restart Apache.
