Php/docs/function.expect-expectl

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• Expect 函数
• Waits until the output from a process matches one of the patterns, a specified time period has passed, or an EOF is seen

expect_expectl

(PECL expect >= 0.1.0)

expect_expectl — Waits until the output from a process matches one of the patterns, a specified time period has passed, or an EOF is seen

说明

expect_expectl ( resource $expect , array $cases [, array &$match ] ) : int

Waits until the output from a process matches one of the patterns, a specified time period has passed, or an EOF is seen.

If match is provided, then it is filled with the result of search. The matched string can be found in match[0]. The match substrings (according to the parentheses) in the original pattern can be found in match[1], match[2], and so on, up to match[9] (the limitation of libexpect).

参数

expect

An Expect stream, previously opened with expect_popen().

cases

An array of expect cases. Each expect case is an indexed array, as described in the following table:

Expect Case Array

Index Key	Value Type	Description	Is Mandatory	Default Value
0	string	pattern, that will be matched against the output from the stream	yes
1	mixed	value, that will be returned by this function, if the pattern matches	yes
2	integer	pattern type, one of: EXP_GLOB, EXP_EXACT or EXP_REGEXP	no	EXP_GLOB

返回值

Returns value associated with the pattern that was matched.

On failure this function returns: EXP_EOF, EXP_TIMEOUT or EXP_FULLBUFFER

更新日志

版本	说明
PECL expect 0.2.1	Prior to version 0.2.1, in match parameter a match string was returned, not an array of match substrings.

范例

Example #1 expect_expectl() example

<?php// Copies file from remote host:ini_set("expect.timeout", 30);$stream = fopen("expect://scp user@remotehost:/var/log/messages /home/user/messages.txt", "r");$cases = array(    // array(pattern, value to return if pattern matched)    array("password:", "asked for password"),    array("yes/no)?",  "asked for yes/no"));while (true) {    switch (expect_expectl($stream, $cases)) {        case "asked for password":            fwrite($stream, "my password\n");            break;        case "asked for yes/no":            fwrite($stream, "yes\n");            break;        case EXP_TIMEOUT:        case EXP_EOF:            break 2; // break both the switch statement and the while loop        default:            die "Error has occurred!";    }}fclose($stream);?>

参见

• expect_popen() - Execute command via Bourne shell, and open the PTY stream to the process