http_support
(PECL pecl_http:0.15.0-1.5.5)
http_support — Check built-in HTTP support
说明
int http_support
([ int $feature = 0
] )
Check for features that require external libraries.
See the feature support constants table for possible values for the feature argument.
参数
- feature
-
feature to probe for
返回值
Returns integer, whether requested feature is supported, or a bitmask with all supported features if feature was omitted.
范例
Example#1 A http_support() example
<?php
if (!http_support(HTTP_SUPPORT_REQUESTS)) {
die("Need HTTP request support!\n");
}
?>