PHP 4.0 Bug #6841 Updated: split, explode, strtok not parsing correctly
| From: | swenson at heronetwork dot com | Date: | Wed, 18 Oct 2000 18:27:38 +0000 |
| Subject: | PHP 4.0 Bug #6841 Updated: split, explode, strtok not parsing correctly | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-35447@lists.php.net to get a copy of this message | ||
ID: 6841
User Update by: swenson@heronetwork.com
Status: Feedback
Bug Type: Scripting Engine problem
Description: split, explode, strtok not parsing correctly
I already simplified it down and added a bunch of echo's so you can see the walk through.
1) Place the sample input into a file called 'mime.txt'.
2) Place the php script into a file in the same directory.
3) Open the example script. I put a simple call in it already.
The events are pretty straight forward:
1) Open a file
2) Read a line into an array of tokens
3) skip the first token (it is the mime type)
4) check to see if the pased in arg matches any of the other tokens
5) return the first token from a line with a matching string or default to
"application/binary"
The extra comments in the script are for other regular expressions that SHOULD work but do not.
Previous Comments:
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[2000-10-18 06:09:44] stas@php.net
Could you please provide short example of any of these functions working wrong - as a short isolated
script, not as a part of complicated code?
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[2000-09-21 22:55:42] swenson@heronetwork.com
On current build I am trying to parse an external tab and
space separated file (mime types). All of the tokenizing functions appear to not be performing the
regex parsing correctly. All of these functions are performing very odd. Most interesting is that
the first item is not even getting into the arrays (or token lists).
Example input:
# Simple mime file
text/html htm HTM html HTML shtml SHTML
text/plain java JAVA c C cc CC cpp CPP h H txt TXT
text/rtf rtf RTF
Script:
<?php
$mimeFile="/tmp/mime.txt";
function get_mime_type ( $ext ) {
global $mimeFile;
if( !$ext || strlen(trim($ext)) == 0 ) {
return "application/binary";
}
$fp = fopen ($mimeFile, "r");
while(!feof($fp)) {
$next = fgetss($fp, 300);
$next = trim($next);
echo("<p>Line in: $next<br>");
if( !$next ) continue;
// try it with [ts] or [:space:] or " " etc.
// it just has problems, same with split and strtok $mime = explode("[
]",$next);
if( substr($mime[0], 0, 1) == "#" ) continue;
$len = count($mime);
echo("Line has: $len tokens - ");
for( $x = 1 ; $x <= $len ; $x++ ) {
if( !$mime[$x] ) continue;
if( substr($mime[$x] ,0 , 1) == "#" ) break;
echo("$x - $mime[$x], ");
if( $ext == $mime[$x] ) return $mime[0];
}
}
return "application/binary";
}
echo("<br><H1>Mime type for .H is " . get_mime_type(".H") .
"</H1>");
?>
Sample output:
Line in: # Simple mime file
Line in:
Line in: text/html htm HTM html HTML shtml SHTML
Line has: 6 tokens - 1 - HTM, 2 - html, 3 - HTML, 4 - shtml, 5 - SHTML,
Line in: text/plain java JAVA c C cc CC cpp CPP h H txt TXT
Line has: 12 tokens - 1 - JAVA, 2 - c, 3 - C, 4 - cc, 5 - CC, 6 - cpp, 7 - CPP, 8 - h, 9 - H, 10 -
txt, 11 - TXT,
Line in: text/rtf rtf RTF
Line has: 2 tokens - 1 - RTF,
Line in:
Mime type for .H is application/binary
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Full Bug description available at: http://bugs.php.net/?id=6841