imagejpeg · Image · PHP

Output image to browser or file

Syntax

imagejpeg(
    GdImage $image,
    resource|string|null $file = null,
    int $quality = -1
): bool

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

file

The path or an open stream resource (which is automatically closed after this function returns) to save the file to. If not set or null, the raw image stream will be output directly.

quality

quality is optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default (-1) uses the default IJG quality value (about 75).

Return

Returns true on success or false on failure. CautionHowever, if libgd fails to output the image, this function returns true.

Examples

1 · image

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$return = imagejpeg($image);

var_export($return);

?>

���JFIF``��>CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality
��C        

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2!!22222222222222222222222222222222222222222222222222��dd"��    
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%&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz������������������������������������������������������������������������    
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2 · file

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$file = $_SERVER['DOCUMENT_ROOT'] . '/assets/jpg/1.jpg';

$return = imagejpeg($image, $file);

var_export($return);

?>

true

3 · quality

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$file = $_SERVER['DOCUMENT_ROOT'] . '/assets/jpg/1.jpg';
$quality = 100;

$return = imagejpeg($image, $file, $quality);

var_export($return);

?>

true

4 · header

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

header("content-type: image/jpeg");

imagejpeg($image);

?>

���JFIF``��>CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), default quality
��C        

 $.' ",#(7),01444'9=82<.342��C            

2!!22222222222222222222222222222222222222222222222222��dd"��    
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���w!1AQaq"2�B����    #3R�br�
$4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz�����������������������������������������������������������������������?���(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(��(���

5 · path

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

$path = "/assets/jpg/1.jpg";
$file = $_SERVER['DOCUMENT_ROOT'] . $path;
imagejpeg($image, $file);

echo '<!doctype html>
<html>
<body>
    <img src="' . $path . '">
</body>
</html>';

?>

<!doctype html>
<html>
<body>
    <img src="/assets/jpg/1.jpg">
</body>
</html>

6 · base64

<?

$width = 100;
$height = 100;
$image = imagecreatetruecolor($width, $height);

ob_start();

    imagejpeg($image);

$output = ob_get_clean();

echo '<!doctype html>
<html>
<body>
    <img src="data:image/jpeg;base64,' . base64_encode($output) . '">
</body>
</html>';

?>

<!doctype html>
<html>
<body>
    <img src="data:image/jpeg;base64,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">
</body>
</html>