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james_s2010 at NOSPAM dot hotmail dot com ¶

15 years ago


I was looking for a way to interactively get a single character response from user. Using STDIN with fread, fgets and such will only work after pressing enter. So I came up with this instead:



#!/usr/bin/php -q

<?php

function inKey($vals) {

    $inKey = "";

    While(!in_array($inKey,$vals)) {

        $inKey = trim(`read -s -n1 valu;echo \$valu`);

    }

    return $inKey;

}

function echoAT($Row,$Col,$prompt="") {

    // Display prompt at specific screen coords

    echo "\033[".$Row.";".$Col."H".$prompt;

}

    // Display prompt at position 10,10

    echoAT(10,10,"Opt : ");



    // Define acceptable responses

    $options = array("1","2","3","4","X");



    // Get user response

    $key = inKey($options);



    // Display user response & exit

    echoAT(12,10,"Pressed : $key\n");

?>



Hope this helps someone.

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