windows8上php_curl启动不了

[Thu Jan 24 16:47:09.315056 2013] [mpm_winnt:notice] [pid 3828:tid 480] AH00455: Apache/2.4.2 (Win64) PHP/5.4.3 configured -- resuming normal operations<br />
[Thu Jan 24 16:47:09.315056 2013] [mpm_winnt:notice] [pid 3828:tid 480] AH00456: Server built: May 13 2012 19:54:49<br />
[Thu Jan 24 16:47:09.315056 2013] [core:notice] [pid 3828:tid 480] AH00094: Command line: 'D:\\wamp\\bin\\apache\\apache2.4.2\\bin\\httpd.exe -d D:/wamp/bin/apache/apache2.4.2'<br />
[Thu Jan 24 16:47:09.317055 2013] [mpm_winnt:notice] [pid 3828:tid 480] AH00418: Parent: Created child process 1112<br />
PHP Warning:  PHP Startup:  in Unknown on line 0<br />
[Thu Jan 24 16:47:09.980139 2013] [mpm_winnt:notice] [pid 1112:tid 368] AH00354: Child: Starting 64 worker threads.