Apache连接重置与preg_split

我面对一个非常奇怪的行为与Apache/2.2.25 (Win32)和PHP/5.4.10，

我有这个代码

$content = <<<EOF
<UNICODE-WIN>
<Version:7><FeatureSet:InDesign-R2L><ColorTable:=<Black:COLOR:CMYK:Process:0,0,0,1>>
<DefineCharStyle:Character Style 1=<Nextstyle:Character Style 1><cTypeface:Bold Italic><cSize:19.000000><cCase:All Caps><cPosition:Normal><cKashida:Default>>
<DefineParaStyle:Paragraph Style 1=<Nextstyle:Paragraph Style 1><cTypeface:Bold Italic><cCase:All Caps>>
<DefineParaStyle:NormalParagraphStyle=<Nextstyle:NormalParagraphStyle>>
<ParaStyle:Paragraph Style 1><CharStyle:Character Style 1>Text Sample Text Sample Text Sample
<CharStyle:><ParaStyle:Paragraph Style 1>
<ParaStyle:NormalParagraphStyle><CharStyle:Character Style 1>
<CharStyle:><ParaStyle:NormalParagraphStyle>Text Sample Text Sample Text Sample Text Sample .
<CharStyle:><ParaStyle:NormalParagraphStyle>aa aaaaa aaaa  '''<bbbbbbb'''''>cccccc
<ParaStyle:NormalParagraphStyle>
Text Sample Text Sample Text Sample Text Sample Text Sample Text Sample
<ParaStyle:NormalParagraphStyle><CharStyle:Character Style 1>Text Sample
<CharStyle:><ParaStyle:NormalParagraphStyle>
Text Sample Text Sample Text Sample Text Sample Text Sample
<ParaStyle:NormalParagraphStyle>Text Sample Text Sample Text Sample Text Sample
<ParaStyle:NormalParagraphStyle><CharStyle:Character Style 1><cNextXChars:Column>
<CharStyle:><ParaStyle:NormalParagraphStyle><cNextXChars:Column>
<ParaStyle:NormalParagraphStyle>Text Sample Text Sample
<ParaStyle:NormalParagraphStyle>
EOF;
$regex         = '/((<(([^<>]|<[^<>]*>)*)>'s*)+)/s';
$parts         = preg_split( $regex, $content, null, PREG_SPLIT_OFFSET_CAPTURE | PREG_SPLIT_NO_EMPTY );

由于某些原因，当我执行这段代码时浏览器会显示连接重置页面，Apache或PHP中没有错误日志

我在网上查了一下，但没有找到好的解决方案，

下面是Windows服务器上phpinfo页面的结果链接

还请注意，我在其他服务器Windows和CentOS上运行相同的代码，它工作得很好

感谢您的帮助