PHP READ PPT FILE

function parsePPT($filename) {
// This approach uses detection of the string "chr(0f).Hex_value.chr(0x00).chr(0x00).chr(0x00)" to find text strings, which are then terminated by another NUL chr(0x00). [1] Get text between delimiters [2]
$fileHandle = fopen($filename, "r");
$line = fread($fileHandle, filesize($filename));
$lines = explode(chr(0x0f),$line);
$outtext = '';

foreach($lines as $thisline) {
if (strpos($thisline, chr(0x00).chr(0x00).chr(0x00)) == 1) {
$text_line = substr($thisline, 4);
$end_pos   = strpos($text_line, chr(0x00));
$text_line = substr($text_line, 0, $end_pos);
$text_line = preg_replace("/[^a-zA-Z0-9\s\,\.\-\n\r\t@\/\_\(\)]/"," ",$text_line);
if (strlen($text_line) > 1) {
$outtext.= substr($text_line, 0, $end_pos)."\n";
}
}
}

return $outtext;
}

$filename = "test_pptk.ppt";
$ppt_string = parsePPT($filename);