#37048 [NEW]: str_split returns non-empty array when given empty string as argument

From: gtg782a at mail dot gatech dot edu Operating system: RH 7.3 PHP version: 5.1.2 PHP Bug Type: Strings related Bug description: str_split returns non-empty array when given empty string as argument Description: ------------ In the lastest version of PHP (5.1.2), running str_split with an empty string returns an array containing a single element, which is also an empty string. This seems counterintuitive and is a different result than in previous versions of PHP5. Rather than return a single-element array with an empty string, I would expect an empty array with no elements. (5.0.4 evaluates in the latter way - giving the more intuitive result). This makes a difference when the resulting array is used as the argument to foreach, for example, such as foreach(str_split($string) as $letter). If a string is empty, it would be intuitive that foreach would never execute its inner code. If this is an intended behavior, then the version difference ought to be noted in the documentation. I do think, however, that the old behavior made more sense. Reproduce code: --------------- var_dump(str_split("")); Expected result: ---------------- array(0) { } Actual result: -------------- array(1) { [0]=> string(0) "" } -- Edit bug report at http://bugs.php.net/?id=37048&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=37048&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=37048&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=37048&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=37048&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=37048&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=37048&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=37048&r=needscript Try newer version: http://bugs.php.net/fix.php?id=37048&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=37048&r=support Expected behavior: http://bugs.php.net/fix.php?id=37048&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=37048&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=37048&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=37048&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=37048&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=37048&r=dst IIS Stability: http://bugs.php.net/fix.php?id=37048&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=37048&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=37048&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=37048&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=37048&r=mysqlcfg