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