<?php
$version_ok = $pcntl_loaded = $posix_loaded = false;
if(version_compare(phpversion(), "5.3.3", ">="))
{
  $version_ok = true;
}
if(in_array("pcntl", get_loaded_extensions()))
{
    $pcntl_loaded = true;
}
if(in_array("posix", get_loaded_extensions()))
{
    $posix_loaded = true;
}

function check($val)
{
    if($val)
    {
       return "\033[32;40m [OK] \033[0m\n";
    }
    else
    {
       return "\033[31;40m [fail] \033[0m\n";
    }
}

echo "PHP Version >= 5.4.0                 " . check($version_ok);

echo "Extension pcntl check                " . check($pcntl_loaded);

echo "Extension posix check                " . check($posix_loaded);

$check_func_map = array(
    "stream_socket_server",
    "stream_socket_accept",
    "stream_socket_client",
    "pcntl_signal_dispatch",
    "pcntl_signal",
    "pcntl_alarm",
    "pcntl_fork",
    "pcntl_wait",
    "posix_getuid",
    "posix_getpwuid",
    "posix_kill",
    "posix_setsid",
    "posix_getpid",
    "posix_getpwnam",
    "posix_getgrnam",
    "posix_getgid",
    "posix_setgid",
    "posix_initgroups",
    "posix_setuid",
    "posix_isatty",
    "proc_open",
    "proc_get_status",
    "proc_close",
    "shell_exec",
);
// 获取php.ini中设置的禁用函数
if($disable_func_string = ini_get("disable_functions"))
{
    $disable_func_map = array_flip(explode(",", $disable_func_string));
}
$php_ini_file = php_ini_loaded_file();
$disabled_functions = [];
// 遍历查看是否有禁用的函数
foreach($check_func_map as $func)
{
    if(isset($disable_func_map[$func]))
    {
        $disabled_functions[] = $func;
    }
}
if($disabled_functions)
{
    echo "\n\033[31;40mFunctions " . implode(',', $disabled_functions) . " has be disabled. Please check disable_functions in $php_ini_file" . "\n";
    echo "see http://www.workerman.net/doc/workerman/faq/disable-function-check.html\033[0m\n";
    exit;
}