iptcembed
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Embeds binary IPTC data into a JPEG image
Description
iptcembed(string $iptc_data, string $filename, int $spool = 0): string|bool
Embeds binary IPTC data into a JPEG image.
Parameters
iptc_dataThe data to be written.
filenamePath to the JPEG image.
spoolSpool flag. If the spool flag is less than 2 then the JPEG will be returned as a string. Otherwise the JPEG will be printed to STDOUT.
Return Values
If spool is less than 2, the JPEG will be returned, Falseforfailure. Otherwise returns true on success Falseforfailure.
Examples
Embedding IPTC data into a JPEG
php
<?php
// iptc_make_tag() function by Thies C. Arntzen
function iptc_make_tag($rec, $data, $value)
{
$length = strlen($value);
$retval = chr(0x1C) . chr($rec) . chr($data);
if($length < 0x8000)
{
$retval .= chr($length >> 8) . chr($length & 0xFF);
}
else
{
$retval .= chr(0x80) .
chr(0x04) .
chr(($length >> 24) & 0xFF) .
chr(($length >> 16) & 0xFF) .
chr(($length >> 8) & 0xFF) .
chr($length & 0xFF);
}
return $retval . $value;
}
// Path to jpeg file
$path = './phplogo.jpg';
// Set the IPTC tags
$iptc = array(
'2#120' => 'Test image',
'2#116' => 'Copyright 2008-2009, The PHP Group'
);
// Convert the IPTC tags into binary code
$data = '';
foreach($iptc as $tag => $string)
{
$tag = substr($tag, 2);
$data .= iptc_make_tag(2, $tag, $string);
}
// Embed the IPTC data
$content = iptcembed($data, $path);
// Write the new image data out to the file.
$fp = fopen($path, "wb");
fwrite($fp, $content);
fclose($fp);
?>