php-makephar/src/global.php

<?php

class LogFuncs {
    public static function bind() {
        static $bound;
        if ($bound++) return;
    }
}

if (@empty(STDOUT) || (!posix_isatty(STDOUT))) {
    define("LF_INFO", "");
    define("LF_DEBUG", "");
    define("LF_WARN", "");
    define("LF_RESET", "");
    define("IS_TTY", false);
} else {
    define("LF_INFO", "\e[32;1m");
    define("LF_DEBUG", "\e[32m");
    define("LF_WARN", "\e[31;1m");
    define("LF_RESET", "\e[0m");
    define("IS_TTY", true);
}

function log_info($fmt,...$arg) { defined("QUIET") || printf(LF_INFO."[info] {$fmt}".LF_RESET."\n", ...$arg); }
function log_debug($fmt,...$arg) { defined("QUIET") || printf(LF_DEBUG."[debg] {$fmt}".LF_RESET."\n", ...$arg); }
function log_warn($fmt,...$arg) { defined("QUIET") || printf(LF_WARN."[warn] {$fmt}".LF_RESET."\n", ...$arg); }