文字
http_support
(PECL pecl_http >= 0.15.0)
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" );
}
?>