From: bugs dot php dot net at ss dot st dot tc
Operating system: OSX and Linux
PHP version: 7.0.0RC4
Package: *Regular Expressions
Bug Type: Bug
Bug description:Regex limits on repeating patterns
Description:
------------
Following examples work well in PHP 5, but fail to produce correct
results in PHP 7.
Test script:
---------------
<?php
echo preg_match('/((A)+)/', str_repeat('A', 1363)) ? 1 : 0, PHP_EOL;
echo preg_match('/((A)+)/', str_repeat('A', 1364)) ? 1 : 0, PHP_EOL;
echo preg_match('/((A)*)/', str_repeat('A', 1363)) ? 1 : 0, PHP_EOL;
echo preg_match('/((A)*)/', str_repeat('A', 1364)) ? 1 : 0, PHP_EOL;
echo preg_match_all('/((A)+)/', str_repeat('A', 1363)) ? 1 : 0,
PHP_EOL;
echo preg_match_all('/((A)+)/', str_repeat('A', 1364)) ? 1 : 0,
PHP_EOL;
echo preg_match_all('/((A)*)/', str_repeat('A', 1363)) ? 1 : 0,
PHP_EOL;
echo preg_match_all('/((A)*)/', str_repeat('A', 1364)) ? 1 : 0,
PHP_EOL;
Expected result:
----------------
Both PHP 5 and 7:
1
1
1
1
1
1
1
1
Actual result:
--------------
PHP 5:
1
1
1
1
1
1
1
1
PHP 7:
1
0
1
0
1
0
1
0
--
Edit bug report at https://bugs.php.net/bug.php?id=70699&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70699&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70699&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70699&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=70699&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=70699&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=70699&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=70699&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=70699&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=70699&r=support
Expected behavior: https://bugs.php.net/fix.php?id=70699&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=70699&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=70699&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=70699&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70699&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=70699&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=70699&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=70699&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=70699&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=70699&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=70699&r=mysqlcfg