A new patch is out for a prior version of open source scripting language PHP, which addresses a recently-discovered security issue in version 4. But the current version of PHP 5 (define) may also be at risk from vulnerabilities that aren't currently patched in that version.

PHP is the 10-year-old open source language that is now taking aim at stealing market share from Microsoft's .NET (define) and Sun's J2EE (define) middleware frameworks.

PHP 5 was released in July 2004, and is the version that PHP backer Zend and its allies will be using as part of a new PHP Framework.

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