function_exists

thermage/thermage

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8

Return true if the given function has been defined

<?php function_exists(string $function): bool

<?php         $input = (defined('STDIN') ? STDIN : fopen('php://input', 'r+'));



        if ($isTtySupported === null && function_exists('proc_open')) {

            $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);

        }

src/Base/Cursor.php

<?php         }




        if (! function_exists('exec')) {

            return false;

        }

src/Base/Terminal.php

<?php     private function hasVt100Support(): bool

    {

        return function_exists('sapi_windows_vt100_support') && sapi_windows_vt100_support(fopen('php://stdout', 'w'));

    }

src/Base/Terminal.php

<?php     private function readFromProcess(string $command): ?string

    {

        if (! function_exists('proc_open')) {

            return null;

        }

src/Base/Terminal.php