#28200 [NEW]: string comparing

From: mikael dot suvi at trigger dot ee Operating system: Linux PHP version: 4.3.5 PHP Bug Type: Strings related Bug description: string comparing Description: ------------ By comparing strings that contain only numbers and are longer that certain length give strange results. When using === I get the correct results. Does that mean that when comparing strings one should use ONLY === and not ==. Reproduce code: --------------- <? $str = "1111111111111111111"; $str1 = "1111111111111111112"; if ($str == $str1) print "equal"; ?> Actual result: -------------- equal -- Edit bug report at http://bugs.php.net/?id=28200&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28200&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28200&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=28200&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=28200&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=28200&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=28200&r=needscript Try newer version: http://bugs.php.net/fix.php?id=28200&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=28200&r=support Expected behavior: http://bugs.php.net/fix.php?id=28200&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=28200&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=28200&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=28200&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28200&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=28200&r=dst IIS Stability: http://bugs.php.net/fix.php?id=28200&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=28200&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=28200&r=float