(PHP ActiveX) Extract data:image/png;base64 from HTML

Demonstrates how to extract base64 image data from HTMl and save to files.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sb = new COM("Chilkat.StringBuilder");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData')
$bd = new COM("Chilkat.BinData");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbFilename = new COM("Chilkat.StringBuilder");
$index = 1;

$success = $sb->LoadFile('qa_data/html/oresp body.txt','utf-8');
// Assume success.
print 'length = ' . $sb->Length . "\n";

$mayHaveMore = 1;
while ($mayHaveMore == 1) {

    // Get the base64 between the 1st occurrence "data:image/png;base64," and "'"
    $sBase64 = $sb->getBetween('data:image/png;base64,',''');

    // If nothing is found, then we'll exit the loop because there are no more.
    $mayHaveMore = $sb->LastMethodSuccess;

    if ($sb->LastMethodSuccess == 1) {
        // Found something.
        // Load into bd and save.
        $success = $bd->LoadEncoded($sBase64,'base64');

        $sbFilename->SetString('qa_output/png_');
        $sbFilename->AppendInt($index);
        $sbFilename->Append('.png');

        $bd->WriteFile($sbFilename->getAsString());

        // Replace "data:image/png;base64" with "data:image-png;base64" so the next iteration finds the next occurrence.
        $sb->ReplaceFirst('data:image/png;base64','data:image-png;base64');
    }

    $index = $index + 1;
}

// Restore our replacements..
$count = $sb->Replace('data:image-png;base64','data:image/png;base64');

print 'All done.' . "\n";

?>