getprotobyname

(PHP 4, PHP 5, PHP 7)

getprotobynameGet protocol number associated with protocol name

说明

getprotobyname ( string $name ) : int

getprotobyname() returns the protocol number associated with the protocol name as per /etc/protocols.

参数

name

The protocol name.

返回值

Returns the protocol number, 或者在失败时返回 FALSE.

范例

Example #1 getprotobyname() example

<?php
$protocol 
'tcp';
$get_prot getprotobyname($protocol);
if (
$get_prot === FALSE) {
    echo 
'Invalid Protocol';
} else {
    echo 
'Protocol #' $get_prot;
}
?>

参见

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