On 4 November 2010 15:11, robert mena <robert.m...@gmail.com> wrote:
> Hi,
> The core of the code is simply
> $fp = fopen('file.tab', 'rb');
> while(!feof($fp))
> {
> $line = fgets($fp);
> $data = explode("\t", $line);
> ...
> }
> So I try to manipulate the $data[X]. For example $data[0] is supposed to be
> numeric so I $n = (int) $data[0]
> One other thing if the second column should contain a string. If I check
> the string visually it is correct but a if( $data[1] == 'stringX') is false
> even if in the file I can see this (and print those two)
> I even did a md5 of both and they are different.
> I seems to be an encoding issue. Is it safe to use explode with utf8
> strings?
> I even tried this code but no match found (jst to replace the explode)
> $str = "abc 文字化け efg";
> $results = array();
> preg_match_all("/\t/u", $str, $results);
> var_dump($results[0]);
> On Thu, Nov 4, 2010 at 6:33 AM, Richard Quadling <rquadl...@gmail.com>
> wrote:
>>
>> On 3 November 2010 21:42, Alexander Holodny <alexander.holo...@gmail.com>
>> wrote:
>> > To exclude unexcepted behavior in case of wrongly formated input data,
>> > it would be much better to use such type-casting method:
>> > intval(ltrim(trim($inStr), '0'))
>> >
>> > 2010/11/3, Nicholas Kell <n...@monkeyknight.com>:
>> >>
>> >> On Nov 3, 2010, at 4:22 PM, robert mena wrote:
>> >>
>> >>> Hi,
>> >>>
>> >>> I have a text file (utf-8 encoded) which contains lines with numbers
>> >>> and
>> >>> text separated by \t. I need to convert the numbers that contains 0
>> >>> (at
>> >>> left) to integers.
>> >>>
>> >>> For some reason one line that contains 00000002 is casted to 0 instead
>> >>> of
>> >>> 2.
>> >>> Bellow the output of the cast (int) $field[0] where I get this from
>> >>> explode each line.
>> >>>
>> >>> 0 00000002
>> >>> 4 00000004
>> >>
>> >>
>> >>
>> >> My first guess is wondering how you are grabbing the strings from the
>> >> file.
>> >> Seems to me like it would just drop the zeros on the left by default.
>> >> Are
>> >> you including the \t in the string by accident? If so, that may be
>> >> hosing
>> >> it. Otherwise, have you tried ltrim on it?
>> >>
>> >> Ex:
>> >>
>> >> $_castableString = ltrim($_yourString, '0');
>> >>
>> >> // Now cast
>>
>> <?php
>> // Create test file.
>> $s_TabbedFilename = './test.tab';
>> file_put_contents($s_TabbedFilename, "0\t00000002" . PHP_EOL .
>> "4\t00000004" . PHP_EOL);
>>
>> // Open test file.
>> $fp_TabbedFile = fopen($s_TabbedFilename, 'rt') or die("Could not open
>> {$s_TabbedFilename}\n");
>>
>> // Iterate file.
>> while(True)
>> {
>> if (False !== ($a_Line = fgetcsv($fp_TabbedFile, 0, "\t")))
>> {
>> var_dump($a_Line);
>> foreach($a_Line as $i_Index => $m_Value)
>> {
>> $a_Line[$i_Index] = intval($m_Value);
>> }
>> var_dump($a_Line);
>> }
>> else
>> {
>> break;
>> }
>> }
>>
>> // Close the file.
>> fclose($fp_TabbedFile);
>>
>> // Delete the file.
>> unlink($s_TabbedFilename);
>>
>>
>> outputs ...
>>
>> array(2) {
>> [0]=>
>> string(1) "0"
>> [1]=>
>> string(8) "00000002"
>> }
>> array(2) {
>> [0]=>
>> int(0)
>> [1]=>
>> int(2)
>> }
>> array(2) {
>> [0]=>
>> string(1) "4"
>> [1]=>
>> string(8) "00000004"
>> }
>> array(2) {
>> [0]=>
>> int(4)
>> [1]=>
>> int(4)
>> }
>>
>> intval() operates as standard on base 10, so no need to worry about
>> leading zeros' being thought of as base8/octal.
>>
>> What is your code? Can you reduce it to something as small like the
>> above to see if you can repeat the issue?
Please don't top post.
With regards to utf-8 data, no, PHP is not unicode aware.
If a multi-byte character is comprised of a 0x09 byte, then it will be broken.
Can you supply the file you are working on?
b64encode it and drop it into a pastebin.
--
Richard Quadling
Twitter : EE : Zend
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
