Convert file to binary string with PHP

Question

I'm looking to convert a file to a binary string, preferably using PHP. Is this possible?

MORE INFO: I'd like to have users upload a small file through a form, and return the binary representation of that file as a binary string - i.e ones and zeros.

Literal '0's and '1's? Because all files are binary.

Marc B
– Marc B

2011-03-17 04:27:54 +00:00
Commented Mar 17, 2011 at 4:27 — Marc B
– Marc B, Commented Mar 17, 2011 at 4:27

zerkms · Accepted Answer · 2011-03-17 04:36:55Z

4

$str = 'hello world';
$length = strlen($str);
$result = '';

for ($i = 0; $i < $length; $i++) {
    $result .= str_pad(decbin(ord($str[$i])), 8, '0', STR_PAD_LEFT);
}

echo $result;

edited Mar 17, 2011 at 4:36

answered Mar 17, 2011 at 4:27

zerkms

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3 Comments

zerkms Over a year ago

@mario: yep, missed that. Thanks

mwotton Over a year ago

Thank you. Pointers are welcome, but a working example is great. I'll check it out and integrate it into my form. Thanks again.

CJ Ramki Over a year ago

can we change into string again?

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