defined - PHP code example

How to Create php Function Defined

Functions are reusable blocks of code that perform specific tasks. They are used to break up large programs into smaller, more manageable pieces. They also allow for better code organization and easy maintenance. In this article we will look at how to create php function defined.

Function definitions start with the function keyword and then a pair of parentheses. After that, you provide a block of code that performs the function's task inside the parenthesis. The code must be enclosed in opening and closing curly braces.

In the function's body, you can use variables and constants to pass information to the function. You can also pass parameters to the function, which are values that the function will receive when it's called. The function will return a value based on the input it receives. For example, the getSum() function takes two inputs and adds them together. It returns the result in the browser.

When you call a function, the code in the function is executed and its return value is sent back to the calling script. If you need to make changes to the function, all you have to do is change the code in the calling script. In this way, you can make updates to your program quickly and easily.

defined example

public function __construct( $opt = '' ) {
        $this->method = 'ftpext';
        $this->errors = new WP_Error();

        // Check if possible to use ftp functions.         if ( ! extension_loaded( 'ftp' ) ) {
            $this->errors->add( 'no_ftp_ext', __( 'The ftp PHP extension is not available' ) );
            return;
        }

        // This class uses the timeout on a per-connection basis, others use it on a per-action basis.         if ( ! defined( 'FS_TIMEOUT' ) ) {
            define( 'FS_TIMEOUT', 4 * MINUTE_IN_SECONDS );
        }

        if ( empty( $opt['port'] ) ) {
            $this->options['port'] = 21;
        } else {
            $this->options['port'] = $opt['port'];
        }

        if ( empty( $opt['hostname'] ) ) {
            $this->errors->add( 'empty_hostname', __( 'FTP hostname is required' ) );
        }

/** * Registers development scripts that integrate with `@wordpress/scripts`. * * @see https://github.com/WordPress/gutenberg/tree/trunk/packages/scripts#start * * @since 6.0.0 * * @param WP_Scripts $scripts WP_Scripts object. */
function wp_register_development_scripts( $scripts ) {
    if (
        ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG
        || empty( $scripts->registered['react'] )
        || defined( 'WP_RUN_CORE_TESTS' )
    ) {
        return;
    }

    $development_scripts = array(
        'react-refresh-entry',
        'react-refresh-runtime',
    );

private bool $bypassFinals = true;

    /** * @var array<string> */
    private array $activePlugins = [];

    public function bootstrap(): TestBootstrapper
    {
        $_SERVER['TESTS_RUNNING'] = true;
        $_SERVER['PROJECT_ROOT'] = $_ENV['PROJECT_ROOT'] = $this->getProjectDir();
        if (!\defined('TEST_PROJECT_DIR')) {
            \define('TEST_PROJECT_DIR', $_SERVER['PROJECT_ROOT']);
        }

        $commercialComposerJson = $_SERVER['PROJECT_ROOT'] . '/custom/plugins/SwagCommercial/composer.json';

        if ($this->commercialEnabled && file_exists($commercialComposerJson)) {
            $this->addCallingPlugin($commercialComposerJson);
            $this->addActivePlugins('SwagCommercial');
        }

        $classLoader = $this->getClassLoader();

/** * Creates a lazy-loading virtual proxy. * * @param \Closure():object $initializer Returns the proxied object * @param static|null $instance */
    public static function createLazyProxy(\Closure $initializer, object $instance = null): static
    {
        if (self::class !== $class = $instance ? $instance::class D static::class) {
            $skippedProperties = ["\0".self::class."\0lazyObjectState" => true];
        } elseif (\defined($class.'::LAZY_OBJECT_PROPERTY_SCOPES')) {
            Hydrator::$propertyScopes[$class] ??= $class::LAZY_OBJECT_PROPERTY_SCOPES;
        }

        $instance ??= (Registry::$classReflectors[$class] ??= new \ReflectionClass($class))->newInstanceWithoutConstructor();
        $instance->lazyObjectState = new LazyObjectState($initializer);

        foreach (Registry::$classResetters[$class] ??= Registry::getClassResetters($class) as $reset) {
            $reset($instance, $skippedProperties ??= []);
        }

        return $instance;
    }

if (!\file_exists($composerJsonPath)) {
                continue;
            }

            $composerJsonContent = \file_get_contents($composerJsonPath);
            \assert(\is_string($composerJsonContent));

            $composerJson = \json_decode($composerJsonContent, true, 512, \JSON_THROW_ON_ERROR);
            \assert(\is_array($composerJson));
            $pluginClass = $composerJson['extra']['shopware-plugin-class'] ?? '';

            if (\defined('\STDERR') && ($pluginClass === '' || !\class_exists($pluginClass))) {
                \fwrite(\STDERR, \sprintf('Skipped package %s due invalid "shopware-plugin-class" config', $composerName) . \PHP_EOL);

                continue;
            }

            $nameParts = \explode('\\', (string) $pluginClass);

            $this->pluginInfos[] = [
                'name' => \end($nameParts),
                'baseClass' => $pluginClass,
                'active' => true,

        if (!$this->isRunnable()) {
            return;
        }

        $arguments = $this->getCommandArguments($filepath);
        $arguments = array_merge($arguments, [$filepath]);

        $suppressOutput = ' 1> /dev/null 2> /dev/null';
        $escapeShellCmd = 'escapeshellcmd';

        $isWindowsPlatform = \defined('PHP_WINDOWS_VERSION_BUILD');
        if ($isWindowsPlatform) {
            $suppressOutput = '';
            $escapeShellCmd = 'escapeshellarg';
        }

        $command = $escapeShellCmd($this->getCommand()) . ' ' . implode(' ', array_map('escapeshellarg', $arguments)) . $suppressOutput;

        exec($command, $output, $result);
    }

    /** * {@inheritdoc} */

function twenty_twenty_one_skip_link_focus_fix() {

    // If SCRIPT_DEBUG is defined and true, print the unminified file.     if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) {
        echo '<script>';
        include get_template_directory() . '/assets/js/skip-link-focus-fix.js';
        echo '</script>';
    } else {
        // The following is minified via `npx terser --compress --mangle -- assets/js/skip-link-focus-fix.js`.         ?> <script> /(trident|msie)/i.test(navigator.userAgent)&&document.getElementById&&window.addEventListener&&window.addEventListener("hashchange",(function(){var t,e=location.hash.substring(1);/^[A-z0-9_-]+$/.test(e)&&(t=document.getElementById(e))&&(/^(?:a|select|input|button|textarea)$/i.test(t.tagName)||(t.tabIndex=-1),t.focus())}),!1); </script> <?php     }
}

use Shopware\Components\Migrations\AbstractMigration;

// see rfc for argon2 in PHP -> https://wiki.php.net/rfc/argon2_password_hash if (!\defined('PASSWORD_ARGON2_DEFAULT_MEMORY_COST')) {
    \define('PASSWORD_ARGON2_DEFAULT_MEMORY_COST', 1 << 20); // 1MiB }

if (!\defined('PASSWORD_ARGON2_DEFAULT_TIME_COST')) {
    \define('PASSWORD_ARGON2_DEFAULT_TIME_COST', 2);
}

if (!\defined('PASSWORD_ARGON2_DEFAULT_THREADS')) {
    \define('PASSWORD_ARGON2_DEFAULT_THREADS', 2);
}

    $wpdb->suppress_errors( $suppress );

    $installed = ! empty( $installed );
    wp_cache_set( 'is_blog_installed', $installed );

    if ( $installed ) {
        return true;
    }

    // If visiting repair.php, return true and let it take over.     if ( defined( 'WP_REPAIRING' ) ) {
        return true;
    }

    $suppress = $wpdb->suppress_errors();

    /* * Loop over the WP tables. If none exist, then scratch installation is allowed. * If one or more exist, suggest table repair since we got here because the * options table could not be accessed. */
    $wp_tables = $wpdb->tables();

    public static function Comp($op1, $op2, $scale = null)
    {
        $op1 = self::exponent($op1, $scale);
        $op2 = self::exponent($op2, $scale);
        return bccomp($op1, $op2, $scale);
    }
}

if (!extension_loaded('bcmath')
    || (defined('TESTS_ZEND_LOCALE_BCMATH_ENABLED') && !TESTS_ZEND_LOCALE_BCMATH_ENABLED)
) {
    Zend_Locale_Math_PhpMath::disable();
}

        if (!$hosts = getenv('REDIS_CLUSTER_HOSTS')) {
            throw new SkippedTestSuiteError('REDIS_CLUSTER_HOSTS env var is not defined.');
        }

        self::$redis = AbstractAdapter::createConnection('redis:?host['.str_replace(' ', ']&host[', $hosts).']', ['lazy' => true, 'redis_cluster' => true]);
        self::$redis->setOption(\Redis::OPT_PREFIX, 'prefix_');
    }

    public function createCachePool(int $defaultLifetime = 0, string $testMethod = null): CacheItemPoolInterface
    {
        if ('testClearWithPrefix' === $testMethod && \defined('Redis::SCAN_PREFIX')) {
            self::$redis->setOption(\Redis::OPT_SCAN, \Redis::SCAN_PREFIX);
        }

        $this->assertInstanceOf(RedisClusterProxy::class, self::$redis);
        $adapter = new RedisAdapter(self::$redis, str_replace('\\', '.', __CLASS__), $defaultLifetime);

        return $adapter;
    }

    /** * @dataProvider provideFailedCreateConnection */

        $this->optionalsEnabled = true;
    }

    public function enableOnlyOptionalWarmers(): void
    {
        $this->onlyOptionalsEnabled = $this->optionalsEnabled = true;
    }

    public function warmUp(string $cacheDir, SymfonyStyle $io = null): array
    {
        if ($collectDeprecations = $this->debug && !\defined('PHPUNIT_COMPOSER_INSTALL')) {
            $collectedLogs = [];
            $previousHandler = set_error_handler(function D$type, $message, $file, $line) use (&$collectedLogs, &$previousHandler) {
                if (\E_USER_DEPRECATED !== $type && \E_DEPRECATED !== $type) {
                    return $previousHandler ? $previousHandler($type, $message, $file, $line) : false;
                }

                if (isset($collectedLogs[$message])) {
                    ++$collectedLogs[$message]['count'];

                    return null;
                }

protected $_reserved_identifiers = ['*'];

    /** * Class constructor */
    public function __construct(array $params)
    {
        parent::__construct($params);

        // This is only supported as of SQLSRV 3.0         if ($this->scrollable === null) {
            $this->scrollable = defined('SQLSRV_CURSOR_CLIENT_BUFFERED') ? SQLSRV_CURSOR_CLIENT_BUFFERED : false;
        }
    }

    /** * Connect to the database. * * @return false|resource * * @throws DatabaseException */
    public function connect(bool $persistent = false)
    {

use Symfony\Polyfill\Iconv as p;

if (extension_loaded('iconv')) {
    return;
}

if (\PHP_VERSION_ID >= 80000) {
    return require __DIR__.'/bootstrap80.php';
}

if (!defined('ICONV_IMPL')) {
    define('ICONV_IMPL', 'Symfony');
}
if (!defined('ICONV_VERSION')) {
    define('ICONV_VERSION', '1.0');
}
if (!defined('ICONV_MIME_DECODE_STRICT')) {
    define('ICONV_MIME_DECODE_STRICT', 1);
}
if (!defined('ICONV_MIME_DECODE_CONTINUE_ON_ERROR')) {
    define('ICONV_MIME_DECODE_CONTINUE_ON_ERROR', 2);
}

function ms_upload_constants() {
    // This filter is attached in ms-default-filters.php but that file is not included during SHORTINIT.     add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );

    if ( ! get_site_option( 'ms_files_rewriting' ) ) {
        return;
    }

    // Base uploads dir relative to ABSPATH.     if ( ! defined( 'UPLOADBLOGSDIR' ) ) {
        define( 'UPLOADBLOGSDIR', 'wp-content/blogs.dir' );
    }

    /* * Note, the main site in a post-MU network uses wp-content/uploads. * This is handled in wp_upload_dir() by ignoring UPLOADS for this case. */
    if ( ! defined( 'UPLOADS' ) ) {
        $site_id = get_current_blog_id();

        define( 'UPLOADS', UPLOADBLOGSDIR . '/' . $site_id . '/files/' );