note 76358 added to function.file-get-contents
| From: | bearachute at gmail dot com | Date: | Wed, 11 Jul 2007 21:38:51 +0000 |
| Subject: | note 76358 added to function.file-get-contents | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-128393@lists.php.net to get a copy of this message | ||
If you're having problems with binary and hex data:
I had a problem when trying to read information from a ttf, which is primarily hex data. A
binary-safe file read automatically replaces byte values with their corresponding ASCII characters,
so I thought that I could use the binary string when I needed readable ASCII strings, and bin2hex()
when I needed hex strings.
However, this became a problem when I tried to pass those ASCII strings into other functions (namely
gd functions). var_dump showed that a 5-character string contained 10 characters, but they
weren't visible. A binary-to-"normal" string conversion function didn't seem to
exist and I didn't want to have to convert every single character in hex using chr().
I used unpack with "c*" as the format flag to see what was going on, and found that every
other character was null data (ordinal 0). To solve it, I just did
str_replace(chr(0), "", $string);
which did the trick.
This took forever to figure out so I hope this helps people reading from hex data!
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Server IP: 64.71.164.2
Probable Submitter: 207.136.246.146
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Manual Page -- http://www.php.net/manual/en/function.file-get-contents.php
Edit -- https://master.php.net/note/edit/76358
Del: integrated -- https://master.php.net/note/delete/76358/integrated
Del: useless -- https://master.php.net/note/delete/76358/useless
Del: bad code -- https://master.php.net/note/delete/76358/bad+code
Del: spam -- https://master.php.net/note/delete/76358/spam
Del: non-english -- https://master.php.net/note/delete/76358/non-english
Del: in docs -- https://master.php.net/note/delete/76358/in+docs
Del: other reasons-- https://master.php.net/note/delete/76358
Reject -- https://master.php.net/note/reject/76358
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