如果使用 telnet 而不是 ssh 的範例，請注意 telnet 可能需要 \r（歸位字元）而不是 \n（換行字元）。
範例 #1 Expect 使用範例
此範例透過 SSH 連線到遠端主機，並印出遠端主機的正常運作時間。
<?php
ini_set("expect.loguser", "Off");
$stream = fopen("expect://ssh root@remotehost uptime", "r");
$cases = array (
array (0 => "password:", 1 => PASSWORD)
);
switch (expect_expectl ($stream, $cases)) {
case PASSWORD:
fwrite ($stream, "password\n");
break;
default:
die ("Error was occurred while connecting to the remote host!\n");
}
while ($line = fgets($stream)) {
print $line;
}
fclose ($stream);
?>以下範例連線到遠端主機，判斷已安裝的作業系統是 32 位元還是 64 位元，然後執行特定套件的更新。
範例 #2 另一個 Expect 使用範例
<?php
ini_set("expect.timeout", -1);
ini_set("expect.loguser", "Off");
$stream = expect_popen("ssh root@remotehost");
while (true) {
switch (expect_expectl ($stream, array (
array ("password:", PASSWORD), // SSH is asking for password
array ("yes/no)?", YESNO), // SSH is asking whether to store the host entry
array ("~$ ", SHELL, EXP_EXACT), // We've got the shell!
))) {
case PASSWORD:
fwrite ($stream, "secret\n");
break;
case YESNO:
fwrite ($stream, "yes\n");
break;
case SHELL:
fwrite ($stream, "uname -a\n");
while (true) {
switch (expect_expectl ($stream, array (
array ("~$ ", SHELL, EXP_EXACT), // We've got the shell!
array ("^Linux.*$", UNAME, EXP_REGEXP), // uname -a output
), $match)) {
case UNAME:
$uname .= $match[0];
break;
case SHELL:
// Run update:
if (strstr ($uname, "x86_64")) {
fwrite ($stream, "rpm -Uhv http://mirrorsite/somepath/some_64bit.rpm\n");
} else {
fwrite ($stream, "rpm -Uhv http://mirrorsite/somepath/some_32bit.rpm\n");
}
fwrite ($stream, "exit\n");
break 2;
case EXP_TIMEOUT:
case EXP_EOF:
break 2;
default:
die ("Error has occurred!\n");
}
}
break 2;
case EXP_TIMEOUT:
case EXP_EOF:
break 2;
default:
die ("Error has occurred!\n");
}
}
fclose ($stream);
?>