PHP Doku:: Readline-Funktionen - ref.readline.html

Verlauf / Chronik / History: (1) anzeigen

Sie sind hier:
Doku-StartseitePHP-HandbuchFunktionsreferenzEingabezeilenspezifische ErweiterungenGNU ReadlineReadline-Funktionen

Ein Service von Reinhard Neidl - Webprogrammierung.

GNU Readline

<<Vordefinierte Konstanten

readline_add_history>>


UnterSeiten:

Readline-Funktionen

Inhaltsverzeichnis


9 BenutzerBeiträge:
- Beiträge aktualisieren...
david at acz dot org
28.02.2007 18:07
Readline only reads the window size on startup or on SIGWINCH.  This means if the window is resized when not in a readline() call, the next call will have odd behavior due to confusion about the window size.

The work-around is to force Readline to re-read the window size by sending it SIGWINCH.  This is accomplished using the async interface, which installs the signal handler but returns control to PHP.

The following function is a drop-in replacement for readline(), but re-reads the window size every time:

<?
   
function xreadline($prompt)
    {
        global
$xreadline, $xreadline_line;
       
$code = '$GLOBALS["xreadline"] = false;' .
               
'$GLOBALS["xreadline_line"] = $line;' .
               
'readline_callback_handler_remove();';
       
$cb = create_function('$line', $code);
       
readline_callback_handler_install($prompt, $cb);
       
$signal = defined("SIGWINCH") ? SIGWINCH : 28;
       
posix_kill(posix_getpid(), $signal);
       
$xreadline = true;
        while (
$xreadline)
           
readline_callback_read_char();
        return
is_null($xreadline_line) ? false : $xreadline_line;
    }
?>
flobee
28.04.2006 19:29
re to: ds at NOSPAM dot undesigned dot org dot za

cool program! note when trying to exec() something:
in the while loop you need to reset exec() returns or you will get all results of all executions (on my my windows and or cygwin :-(
like:
<?php
// your class prompt()

echo "Enter something or 'exit' to quit\n";
do {
   
$cmdline = new prompt();
   
$buffer = $cmdline->get('shell command: ');
// init/ reset first!
   
$data = null;
   
$return = null;
// now start:
   
echo "You said: $buffer\n";
    if (!empty(
$buffer)) {
       
$x = exec($buffer, $data, $return);
       
print_r($data);
    }
} while (
$buffer !== "exit");
echo
"Goodbye\n";
jeffrey at thompsonic dot com
22.02.2005 15:18
Here's an easy way without readline() if you don't have it compiled in already:

   $fp = fopen("php://stdin","r");
   $line = rtrim(fgets($fp, 1024);
jcl atNOSPAM jcl dot name
23.11.2004 18:40
Even better than 'plz at dont dot spam' in only one line :) :

@c:\\php\\cli\\php.exe script.php %*

Cheers,
Jean-Charles
plz at dont dot spam
8.08.2004 10:50
To get all arguments passed to a batch file in one variable
rather than using %1 %2 %3 etc;

:LOOP
if "%1" == "" goto DONE
set args=%args% %1
shift
goto LOOP
:DONE
@c:\\php\\cli\\php.exe script.php %args%
set args=
ds at NOSPAM dot undesigned dot org dot za
5.12.2003 5:04
You can open /dev/tty on unix systems or \con in windows, with ob_implicit_flush(true) to write output unbuffered.  Works like a charm :-)

-------------------------------

#!/usr/local/bin/php -q
<?php

set_time_limit
(0);
@
ob_end_flush();
ob_implicit_flush(true);

class
prompt {
  var
$tty;

  function
prompt() {
    if (
substr(PHP_OS, 0, 3) == "WIN") {
     
$this->tty = fOpen("\con", "rb");
    } else {
      if (!(
$this->tty = fOpen("/dev/tty", "r"))) {
       
$this->tty = fOpen("php://stdin", "r");
      }
    }
  }

  function
get($string, $length = 1024) {
    echo
$string;
   
$result = trim(fGets($this->tty, $length));
    echo
"\n";
    return
$result;
  }
}

echo
"Enter something or 'exit' to quit\n";
do {
 
$cmdline = new prompt();
 
$buffer = $cmdline->get("Something: ");
  echo
"You said: $buffer\n";
} while (
$buffer !== "exit");
echo
"Goodbye\n";

?>
jewfish at jewfish dot net
11.06.2002 1:05
There is a simpler way to do a multiline read than above:

function multiline() {
    while(($in = readline("")) != ".")
        $story .= ($PHP_OS == "WINNT") ? "\r\n".$in :
                                         "\n".$in;

    return $story;
}
joshua at neocodesoftware.com
21.04.2002 12:17
Here's an example simple readline-like way to input from command line on windows - the single line is from http://www.phpbuilder.com/columns/darrell20000319.php3, the multiline is something I added...

<?
function read () {
   
# 4092 max on win32 fopen

   
$fp=fopen("php://stdin", "r");
   
$in=fgets($fp,4094);
   
fclose($fp);

   
# strip newline
   
(PHP_OS == "WINNT") ? ($read = str_replace("\r\n", "", $in)) : ($read = str_replace("\n", "", $in));

    return
$read;
}

function
multilineread () {
    do {
       
$in = read();

       
# test exit
       
if ($in == ".") return $read;

       
# concat input
       
(PHP_OS == "WINNT") ? ($read = $read . ($read ? "\r\n" : "") . $in) : ($read = $read . "\n" . $in);

    } while (
$inp != ".");

    return
$read;
}

print(
"End input with . on line by itself.\n");

print(
"What is your first name?\n");
$first_name = multilineread();

print(
"What is your last name?\n");
$last_name = read();

print(
"\nHello, $first_name $last_name! Nice to meet you! \n");
?>

14.04.2002 16:17
[Ed. note: you can use fopen("php://stdin", "w") to achieve the same thing, works on both Windows and Unix)]

I wanted to get console input in a PHP script running on windows, so I made a little hack, which is so simple, it is clearly public domain.  What I did was write a C++ program to get a line, then output it.  Then all that is needed is to exec() that program and capture the output - readline() for windows.  The C++ source is as follows:

#include <iostream.h>
#include <string>
void main()
{
    string input;
    cin >> input;
    cout << input;
}

It works wonderfully for my purposes, since I love the PHP language and want to have console input.

Justin Henck



PHP Powered Diese Seite bei php.net
The PHP manual text and comments are covered by the Creative Commons Attribution 3.0 License © the PHP Documentation Group - Impressum - mail("TO:Reinhard Neidl",...)