/**
* Determines whether a file is text or binary by checking the first few bytes in the file.
* The exact number of bytes is system dependent, but it is typically several thousand.
* If every byte in that part of the file is non-null, considers the file to be text;
* otherwise it considers the file to be binary.
*
* @param string $file
* @return boolean
*/
public static function isBinary($file)
{
// open file
$file = new File($file, 'rb');
// get block size
$stat = $file->stat();
$blockSize = $stat['blksize'];
if ($blockSize < 0) {
$blockSize = 1024;
}
if ($blockSize > $file->filesize()) {
$blockSize = $file->filesize();
}
if ($blockSize <= 0) {
return false;
}
// get bytes
$block = $file->read($blockSize);
return strlen($block) == 0 || preg_match_all('/\\x00/', $block, $match) > 0;
}
/**
* Determines whether a file is text or binary by checking the first few bytes in the file.
* The exact number of bytes is system dependent, but it is typically several thousand.
* If every byte in that part of the file is non-null, considers the file to be text;
* otherwise it considers the file to be binary.
*
* @param string $file
* @return boolean
*/
public static function isBinary($file) {
// open file
$file = new File($file, 'rb');
// get block size
$stat = $file->stat();
$blockSize = $stat['blksize'];
if ($blockSize < 0) $blockSize = 1024;
if ($blockSize > $file->filesize()) $blockSize = $file->filesize();
if ($blockSize <= 0) return false;
// get bytes
$block = $file->read($blockSize);
return (strlen($block) == 0 || strpos($block, "\0") !== false);
}
