#33368 [NEW]: String '0' not handled correctly in foreach

From: drphilosopher at yahoo dot com Operating system: Windows XP Service Patch 2 PHP version: 5.0.3 PHP Bug Type: Arrays related Bug description: String '0' not handled correctly in foreach Description: ------------ The string, '0', is not handled correctly in a foreach loop (and possibly elsewhere). The first loop executes correctly. The second and third loops perform incorrect comparisons. In loops two and three, '0' == 'NOLIMIT' evaluates to true when it should be false. Reproduce code: --------------- $arr = array('0' => '$0', '1000' => '$1,000', '2000' => '$2,000', '3000' => '$3,000', 'NOLIMIT' => 'NO LIMIT'); foreach ($arr as $key => $value) { echo "$key : $value $hi\n"; } echo "\n"; foreach ($arr as $key => $value) { if ($key == 'NOLIMIT') { continue; } echo "$key : $value $hi\n"; } echo "\n"; foreach ($arr as $key => $value) { $hi = ($key == 'NOLIMIT' ? 'hi' : ''); echo "$key : $value $hi\n"; } Expected result: ---------------- 0 : $0 1000 : $1,000 2000 : $2,000 3000 : $3,000 NOLIMIT : NO LIMIT 0 : $0 1000 : $1,000 2000 : $2,000 3000 : $3,000 0 : $0 1000 : $1,000 2000 : $2,000 3000 : $3,000 NOLIMIT : NO LIMIT hi Actual result: -------------- 0 : $0 1000 : $1,000 2000 : $2,000 3000 : $3,000 NOLIMIT : NO LIMIT 1000 : $1,000 2000 : $2,000 3000 : $3,000 0 : $0 hi 1000 : $1,000 2000 : $2,000 3000 : $3,000 NOLIMIT : NO LIMIT hi I am using PHP 5.03 and Apache 2.0.53 on Windows XP, service patch 2. -- Edit bug report at http://bugs.php.net/?id=33368&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33368&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=33368&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=33368&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=33368&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=33368&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=33368&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=33368&r=needscript Try newer version: http://bugs.php.net/fix.php?id=33368&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=33368&r=support Expected behavior: http://bugs.php.net/fix.php?id=33368&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=33368&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=33368&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=33368&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33368&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=33368&r=dst IIS Stability: http://bugs.php.net/fix.php?id=33368&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=33368&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=33368&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=33368&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=33368&r=mysqlcfg