PHP Manual
GD- und Image-Funktionen
Create a new image from the image stream in the string

imagecreatefromstring

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

imagecreatefromstring — Create a new image from the image stream in the string

Beschreibung

imagecreatefromstring(string $data): GdImage|false

imagecreatefromstring() returns an image identifier representing the image obtained from the given data. These types will be automatically detected if your build of PHP supports them: JPEG, PNG, GIF, BMP, WBMP, GD2, and WEBP.

Parameter-Liste

data: A string containing the image data.

Rückgabewerte

An image object will be returned on success. false is returned if the image type is unsupported, the data is not in a recognised format, or the image is corrupt and cannot be loaded.

Fehler/Exceptions

imagecreatefromstring() raises an E_WARNING level error, if the data is not in a recognized format.

Changelog

Version	Beschreibung
8.0.0	On success, this function returns a GDImage instance now; previously, a resource was returned.
7.3.0	WEBP is supported now (if supported by the libgd in use).

Beispiele

Beispiel #1 imagecreatefromstring() example


<?php
$data = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl'
       . 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr'
       . 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r'
       . '8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
$data = base64_decode($data);

$im = imagecreatefromstring($data);
if ($im !== false) {
    header('Content-Type: image/png');
    imagepng($im);
    imagedestroy($im);
}
else {
    echo 'An error occurred.';
}
?>