From:             phpbug at phormix dot com
Operating system: Debian Gnu/Linux
PHP version:      4.4.0
PHP Bug Type:     Strings related
Bug description:  str_replace leaks when replacing text in arrays

Description:
------------
Replacing items in an array of  20-30 items with str_replace seems to leak
memory. The application in question would crash when parsing various larger
CSV files, using upwards to >500MB  per an 18MB data-file. 

Jumps in memory usage were observed at the point where str_replace was
run. Using the function 'preg_replace' instead issued no such leak

Reproduce code:
---------------
str_replace('~comma~', ',', $myarray );

Expected result:
----------------
(values of ~comma~ in string were replaced with actual commas)

Actual result:
--------------
Progress would end indicating in logs that the memory limit of 500MB (as
indicated in php.ini) was exceeded.

-- 
Edit bug report at http://bugs.php.net/?id=34222&edit=1
-- 
Try a CVS snapshot (php4):   http://bugs.php.net/fix.php?id=34222&r=trysnapshot4
Try a CVS snapshot (php5.0): 
http://bugs.php.net/fix.php?id=34222&r=trysnapshot50
Try a CVS snapshot (php5.1): 
http://bugs.php.net/fix.php?id=34222&r=trysnapshot51
Fixed in CVS:                http://bugs.php.net/fix.php?id=34222&r=fixedcvs
Fixed in release:            http://bugs.php.net/fix.php?id=34222&r=alreadyfixed
Need backtrace:              http://bugs.php.net/fix.php?id=34222&r=needtrace
Need Reproduce Script:       http://bugs.php.net/fix.php?id=34222&r=needscript
Try newer version:           http://bugs.php.net/fix.php?id=34222&r=oldversion
Not developer issue:         http://bugs.php.net/fix.php?id=34222&r=support
Expected behavior:           http://bugs.php.net/fix.php?id=34222&r=notwrong
Not enough info:             
http://bugs.php.net/fix.php?id=34222&r=notenoughinfo
Submitted twice:             
http://bugs.php.net/fix.php?id=34222&r=submittedtwice
register_globals:            http://bugs.php.net/fix.php?id=34222&r=globals
PHP 3 support discontinued:  http://bugs.php.net/fix.php?id=34222&r=php3
Daylight Savings:            http://bugs.php.net/fix.php?id=34222&r=dst
IIS Stability:               http://bugs.php.net/fix.php?id=34222&r=isapi
Install GNU Sed:             http://bugs.php.net/fix.php?id=34222&r=gnused
Floating point limitations:  http://bugs.php.net/fix.php?id=34222&r=float
No Zend Extensions:          http://bugs.php.net/fix.php?id=34222&r=nozend
MySQL Configuration Error:   http://bugs.php.net/fix.php?id=34222&r=mysqlcfg

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