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imagecreatefromstring

Name

imagecreatefromstring — Creates an image from an image stream.

Synopsis

int imagecreatefromstring(image);
string image: Image stream

Returns

Image identifier

Description

This function is similar to other functions that create a image from a base image. This function is unique, however, in that it can create an image from a data stream, as opposed to reading the image from the filesystem. One example is that an image can be created by accessing binary image data stored in a database. The image can then be modified using the GD functions and output to the browser.

Version

Existing since version 4.0.4

Example

Example 411. Modify an image from a mySQL BLOB

mysql_connect("localhost", "user", "password");
mysql_select_db("employees");

$query = "SELECT photo FROM employee_info";
$result = mysql_query($query);
$data = mysql_result($result, 0, "photo");

$im = imagecreatefromstring($data);
$red = imagecolorallocate($im, 255, 0, 0);
imagestring($im, 5, 20, 20, "FIRED!", $red);
header("Content-type: image/png");
imagepng($im);



PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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