(PHP 4, PHP 5, PHP 7, PHP 8)
iptcembed — Embeds binary IPTC data into a JPEG image
$iptc_data, string $filename, int $spool = 0): string|boolEmbeds binary IPTC data into a JPEG image.
iptc_dataThe data to be written.
filenamePath to the JPEG image.
spoolSpool flag. If the spool flag is less than 2 then the JPEG will be returned as a string. Otherwise the JPEG will be printed to STDOUT.
If spool is less than 2, the JPEG will be returned,
or false on failure. Otherwise returns true on success
or false on failure.
Example #1 Embedding IPTC data into a JPEG
<?php
// iptc_make_tag() function by Thies C. Arntzen
function iptc_make_tag($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);
?>
Note:
This function does not require the GD image library.