[PHP-DEV] Bug #12368 Updated: Regexp limit the string size From: stefanbocskai <email protected>
Date: 08/30/01

ID: 12368
User updated by: stefanbocskai <email protected>
Reported By: stefanbocskai <email protected>
Old Status: Feedback
Status: Open
Bug Type: Regexps related
Operating System: Linux
PHP Version: 4.0.4pl1
New Comment:

Hi and thanks for your interrest!

Here is an example to ilustrate my problem! I'm not sure if is a memory problem or a bug.

I copyed and adapted a part of my source:

<?php
$LEN=5000; //-- is not working
//$LEN=1000; //-- is working

// creating a long string containg a sub "block"
$BlockTemplate=str_repeat("0", $LEN)."<!-- BEGIN BLOCK: abc -->".str_repeat("I", $LEN)."<!-- END BLOCK: abc -->".str_repeat("0", $LEN);
$BLOCKS=array();

function _createChildren_(){
global $BlockTemplate,$BLOCKS;
$part="[a-z,0-9,\_]*";
$_start_tag_ = "<!--";
$_end_tag_ = "-->";
$_begin_block_ = "BEGIN[[:blank:]]*BLOCK:";
$_end_block_ = "END[[:blank:]]*BLOCK:";

// creating pattern ...
$patern_begin = $_start_tag_."[[:blank:]]*".$_begin_block_."[[:blank:]]*(".$part.")[[:blank:]]*".$_end_tag_;
$patern_end1 = $_start_tag_."[[:blank:]]*".$_end_block_."[[:blank:]]*";
$patern_end2 = "[[:blank:]]*".$_end_tag_;

        while ((eregi("(".$patern_begin.")(.*)$",$BlockTemplate,$res))&&(eregi("^((.*)".$patern_end1.$res[2].$patern_end2.")", $res[3], $res2))){
                // now $res2[2] is the content of the new block
                // and $res[2] is the name ...
                // colecting in $BLOCKS the block contain if was found
                $BLOCKS[$res[2]] = $res2[2];
                $patern = $res[1].$res2[1];
                $BlockTemplate = str_replace($patern,"{ABC.".$res[2]."}", $BlockTemplate);
        }//while
        
}

//the following will extract all chlidren block from text ...
_createChildren_();

//if the block was found will be printed
echo "--".$BLOCKS["abc"]."--";

?>

This problem apears only on php4.0.4pl1

Thanks for your collaboration!
Stefan

Previous Comments:
------------------------------------------------------------------------

[2001-08-30 10:54:10] sander <email protected>

Unable to reproduce, see the following code:
<?php
$string = str_repeat("0", 10000)."abc".str_repeat("0", 10000);
echo ereg("abc", $string)?"true":"false";
?>
Returns true.

Can you post a snippet of your code?

------------------------------------------------------------------------

[2001-07-25 11:51:09] stefanbocskai <email protected>

hi

I used the regexp functions (ereg and eregi) to split a file in blocks, the delimiters are somthing like:
<!-- BEGIN BLOCK: main -->
<!-- END BLOCK: main -->

but the split operation failt if the file size is bigger then (aproximative value) 11k

So, this is a bug or this was already specified in some place?

Stefan
 

------------------------------------------------------------------------

Edit this bug report at http://bugs.php.net/?id=12368&edit=1 

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