PHP rtrim function bug_PHP tutorial

Test code:

<?<span php
</span><span $str</span> = <span rtrim</span>('article_list.html', '.html'<span );
</span><span echo</span> <span $str</span><span ;

</span><span echo</span> '<br />'<span ;

</span><span $str</span> = <span rtrim</span>('article_index.html', '.html'<span );
</span><span echo</span> <span $str</span><span ;

</span><span echo</span> '<br />'<span ;

</span><span $str</span> = <span rtrim</span>('articleABCT.html', '.html'<span );
</span><span echo</span> <span $str</span><span ;

</span><span echo</span> '<br />'<span ;
</span>?>

Display results:

article_index
articleABCT

WINNT Apache/2.2.16 (Win32) PHP/5.2.14 (local PHPnow 1.5.6-1)
Linux Apache 2.0 PHP/5.2.17p1 (wdcp_v2.5.7)
Linux LiteSpeed ​​PHP/5.2 .17 (Sleepwalk Host)
Linux Apache 2.0 PHP/5.2.17 (Worry-Free Host)

PHP rtrim function bug

http://www.bkjia.com/PHPjc/440248.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/440248.htmlTechArticleTest code: ? = ('article_list.html', '.html' 'br /' = ('article_index .html', '.html' 'br /' = ('articleABCT.html', '.html' 'br /' ? Display results: article_index articleABCT...