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iptcembed

iptcembed

Embeds binary IPTC data into a JPEG image

 **iptcembed** string $iptc_data string $filename int $spool

Embeds 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 is less than 2, the JPEG will be returned, return.falseforfailure. Otherwise returns true on success return.falseforfailure. spool

Voorbeeld: 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);
?>
Vorige ← imagexbm Volgende iptcparse →

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