#40122 [NEW]: Variable parsing eats up memory

From: spheroid@php.net Operating system: Mac OS X 10.4.8 PHP version: 5.2.1RC2 PHP Bug Type: Strings related Bug description: Variable parsing eats up memory Description: ------------ I'm not sure whether this is intended behaviour, but variable parsing inside strings seem to allocate memory, which is not freed until script has been executed. Reproduce code: --------------- $foo = 'value'; echo "first loop\n"; for ($i = 0; $i < 10; $i++) { $bar = "foo: $foo"; echo memory_get_usage() . "\n"; } echo "second loop\n"; for ($i = 0; $i < 10; $i++) { $bar = 'foo: ' . $foo; echo memory_get_usage() . "\n"; } Expected result: ---------------- first loop 52280 52280 ... 52280 52280 second loop 52516 52516 ... 52516 52516 Actual result: -------------- first loop 52280 52304 52328 52352 52376 52400 52424 52448 52472 52496 second loop 52516 52516 ... 52516 52516 -- Edit bug report at http://bugs.php.net/?id=40122&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40122&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40122&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40122&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40122&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40122&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40122&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40122&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40122&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40122&r=support Expected behavior: http://bugs.php.net/fix.php?id=40122&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40122&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40122&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40122&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40122&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40122&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40122&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40122&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40122&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40122&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40122&r=mysqlcfg