curl_init()未定义 - 通常的嫌疑人不是罪魁祸首

I am trying to run curl_init() and I am getting "not defined".

Running IIS on Windows 7, PHP 5.3.24

Checked all the common problems:

  1. Extension dir is set properly.

  2. cURL is being loaded.

  3. Extension is showing as enabled in IIS.

Output from PHPInfo()

cURL support enabled
cURL Information 7.29.0
Age 3
Features
AsynchDNS Yes
Debug No
GSS-Negotiate Yes
IDN No
IPv6 Yes
Largefile Yes
NTLM Yes
SPNEGO Yes
SSL Yes
SSPI Yes
krb4 No
libz Yes
CharConv No
Protocols dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, pop3, pop3s, rtsp, scp, sftp, smtp, smtps, telnet, tftp
Host i386-pc-win32
SSL Version OpenSSL/0.9.8y
ZLib Version 1.2.7
libSSH Version libssh2/1.4.2

I do not understand why it can't find the function. Any ideas?