Using the Date Function and Time Function in PHP

PHP is a powerful programming language that supports many advanced features like first-class functions, dynamic variable scope, iteration and recursion. Almost all built-in functions in PHP are readable and understandable, and they have well-documented code. The syntax of PHP is simple and flexible, making it easy to understand for new developers.

Working with dates and times in web development is a common task. It's important to know how to correctly format these elements to ensure that your web applications work as expected. This article will explore several different ways to do this in PHP, including using the date function and time function.

The idate() function is used to display the current date in a specific format. It returns integer values representing the day, month and year of the date. For example, idate("d") will return the date as "Y". The idate() function works similarly to the MySQL time() function. However, the value it returns depends on the default timezone of the web server.

The current() function is a useful array function that allows you to retrieve the value of the element being pointed at by the internal pointer. It's similar to the next(), prev() and other array functions. It's especially helpful if you're traversing through an array and need to get the value of the current element. You can use this function in conjunction with other array functions to perform more complex manipulations.

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current example

public function testRequiredValidationThrowsError(): void
    {
        $this->field->compile($this->getContainer()->get(DefinitionInstanceRegistry::class));

        $kvPair = new KeyValuePair('email', null, true);

        /** @var WriteConstraintViolationException|null $exception */
        $exception = null;

        try {
            $this->serializer->encode($this->field, $this->existence, $kvPair, $this->parameters)->current();
        } catch (\Throwable $e) {
            $exception = $e;
        }

        static::assertInstanceOf(WriteConstraintViolationException::class, $exception, 'This value should not be blank.');
        static::assertEquals('/email', $exception->getViolations()->get(0)->getPropertyPath());
    }
}
public function getEntities(): array
    {
        return $this->queryBuilder->getQuery()->execute();
    }

    public function getEntitiesByIds(string $identifier, array $values): array
    {
        if (null !== $this->queryBuilder->getMaxResults() || 0 < (int) $this->queryBuilder->getFirstResult()) {
            // an offset or a limit would apply on results including the where clause with submitted id values             // that could make invalid choices valid             $choices = [];
            $metadata = $this->queryBuilder->getEntityManager()->getClassMetadata(current($this->queryBuilder->getRootEntities()));

            foreach ($this->getEntities() as $entity) {
                if (\in_array((string) current($metadata->getIdentifierValues($entity)), $values, true)) {
                    $choices[] = $entity;
                }
            }

            return $choices;
        }

        $qb = clone $this->queryBuilder;
        

    protected function loadResource(string $resource): array
    {
        $stream = fopen($resource, 'r');

        $stat = fstat($stream);

        if ($stat['size'] < self::MO_HEADER_SIZE) {
            throw new InvalidResourceException('MO stream content has an invalid format.');
        }
        $magic = unpack('V1', fread($stream, 4));
        $magic = hexdec(substr(dechex(current($magic)), -8));

        if (self::MO_LITTLE_ENDIAN_MAGIC == $magic) {
            $isBigEndian = false;
        } elseif (self::MO_BIG_ENDIAN_MAGIC == $magic) {
            $isBigEndian = true;
        } else {
            throw new InvalidResourceException('MO stream content has an invalid format.');
        }

        // formatRevision         $this->readLong($stream, $isBigEndian);
        

    protected function parseNodes(array $nodes): array
    {
        $values = [];

        foreach ($nodes as $name => $childNodes) {
            if (is_numeric($name) && \is_array($childNodes) && 1 === \count($childNodes)) {
                $options = current($childNodes);

                if (\is_array($options)) {
                    $options = $this->parseNodes($options);
                }

                $values[] = $this->newConstraint(key($childNodes), $options);
            } else {
                if (\is_array($childNodes)) {
                    $childNodes = $this->parseNodes($childNodes);
                }

                
$slot->setUniqueIdentifier('id');
        $slot->setType('product-slider');
        $slot->setFieldConfig($fieldConfig);

        $collection = $this->sliderResolver->collect($slot, $resolverContext);
        static::assertInstanceOf(CriteriaCollection::class, $collection);

        static::assertCount(1, $collection->all());
        static::assertEquals(ProductDefinition::class, key($collection->all()));

        /** @phpstan-ignore-next-line - will fail because return type of getIterator will change */
        static::assertEquals('product-slider-entity-fallback_id', key($collection->getIterator()->current()));

        $expectedCriteria = new Criteria();
        $expectedCriteria->addSorting(new FieldSorting('name', FieldSorting::ASCENDING));
        $expectedCriteria->addFilter(new MultiFilter(
            MultiFilter::CONNECTION_AND,
            [
                new EqualsAnyFilter('product.id', [Uuid::randomHex()]),
                new RangeFilter('product.width', [
                    'gte' => 120,
                    'lte' => 180,
                ]),
            ]
$this->render_callback = array( $this, 'render_callback' );
        }

        // Process settings.         if ( ! isset( $this->settings ) ) {
            $this->settings = array( $id );
        } elseif ( is_string( $this->settings ) ) {
            $this->settings = array( $this->settings );
        }

        if ( empty( $this->primary_setting ) ) {
            $this->primary_setting = current( $this->settings );
        }
    }

    /** * Retrieves parsed ID data for multidimensional setting. * * @since 4.5.0 * * @return array { * ID data for multidimensional partial. * * @type string $base ID base. * @type array $keys Keys for multidimensional array. * } */
      $process_parents = [];
      $process_parents[] = $parent;

      // Loops over the parent terms and adds its children to the tree array.       // Uses a loop instead of a recursion, because it's more efficient.       while (count($process_parents)) {
        $parent = array_pop($process_parents);
        // The number of parents determines the current depth.         $depth = count($process_parents);
        if ($max_depth > $depth && !empty($this->treeChildren[$vid][$parent])) {
          $has_children = FALSE;
          $child = current($this->treeChildren[$vid][$parent]);
          do {
            if (empty($child)) {
              break;
            }
            $term = $load_entities ? $term_entities[$child] : $this->treeTerms[$vid][$child];
            if (isset($this->treeParents[$vid][$load_entities ? $term->id() : $term->tid])) {
              // Clone the term so that the depth attribute remains correct               // in the event of multiple parents.               $term = clone $term;
            }
            $term->depth = $depth;
            
    // known from dumping that there is nothing to resolve.     if (isset($definition['synthetic']) && $definition['synthetic'] === TRUE) {
      throw new RuntimeException(sprintf('You have requested a synthetic service ("%s"). The service container does not know how to construct this service. The service will need to be set before it is first used.', $id));
    }

    $arguments = [];
    if (isset($definition['arguments'])) {
      $arguments = $this->resolveServicesAndParameters($definition['arguments']);
    }

    if (isset($definition['file'])) {
      $file = $this->frozen ? $definition['file'] : current($this->resolveServicesAndParameters([$definition['file']]));
      require_once $file;
    }

    if (isset($definition['factory'])) {
      $factory = $definition['factory'];
      if (is_array($factory)) {
        $factory = $this->resolveServicesAndParameters([$factory[0], $factory[1]]);
      }
      elseif (!is_string($factory)) {
        throw new RuntimeException(sprintf('Cannot create service "%s" because of invalid factory', $id));
      }

      
if ($this->store->get('step') != 'credential') {
      return $this->restartUpgradeForm();
    }

    $form = parent::buildForm($form, $form_state);
    $form['actions']['submit']['#value'] = $this->t('Review upgrade');

    $form['#title'] = $this->t('Drupal Upgrade');

    $drivers = $this->getDatabaseTypes();
    $drivers_keys = array_keys($drivers);
    $default_driver = current($drivers_keys);

    $default_options = [];

    $form['help'] = [
      '#type' => 'item',
      '#description' => $this->t('Provide the information to access the Drupal site you want to upgrade. Files can be imported into the upgraded site as well. See the <a href=":url">Upgrade documentation for more detailed instructions</a>.', [':url' => 'https://www.drupal.org/upgrade/migrate']),
    ];

    $migrate_source_version = Settings::get('migrate_source_version') == '6' ? '6' : '7';
    $form['version'] = [
      '#type' => 'radios',
      

    protected function write(): ?array
    {
        if (!isset($this->pipes[0])) {
            return null;
        }
        $input = $this->input;

        if ($input instanceof \Iterator) {
            if (!$input->valid()) {
                $input = null;
            } elseif (\is_resource($input = $input->current())) {
                stream_set_blocking($input, 0);
            } elseif (!isset($this->inputBuffer[0])) {
                if (!\is_string($input)) {
                    if (!\is_scalar($input)) {
                        throw new InvalidArgumentException(sprintf('"%s" yielded a value of type "%s", but only scalars and stream resources are supported.', get_debug_type($this->input), get_debug_type($input)));
                    }
                    $input = (string) $input;
                }
                $this->inputBuffer = $input;
                $this->input->next();
                $input = null;
            }
'name' => $sender->getName(),
            ]),
            'to' => $this->prepareAddresses($this->getRecipients($email, $envelope)),
            'subject' => $email->getSubject(),
        ];

        if ($attachments = $this->prepareAttachments($email)) {
            $payload['attachments'] = $attachments;
        }

        if ($replyTo = $email->getReplyTo()) {
            $payload['reply_to'] = current($this->prepareAddresses($replyTo));
        }

        if ($cc = $email->getCc()) {
            $payload['cc'] = $this->prepareAddresses($cc);
        }

        if ($bcc = $email->getBcc()) {
            $payload['bcc'] = $this->prepareAddresses($bcc);
        }

        if ($email->getTextBody()) {
            

            }

            $x1 = $xoff + (int)(($numer + ($xlim - $xoff) * $chunk) / $nchunks);
            for (; $x < $x1; $x++) {
                $line = $flip ? $this->yv[$x] : $this->xv[$x];
                if (empty($ymatches[$line])) {
                    continue;
                }
                $matches = $ymatches[$line];
                reset($matches);
                while ($y = current($matches)) {
                    if (empty($this->in_seq[$y])) {
                        $k = $this->_lcsPos($y);
                        assert($k > 0);
                        $ymids[$k] = $ymids[$k - 1];
                        break;
                    }
                    next($matches);
                }
                while ($y = current($matches)) {
                    if ($y > $this->seq[$k - 1]) {
                        assert($y <= $this->seq[$k]);
                        
return \Drupal::state()->get('image_test.results', []);
  }

  /** * Sets up an image with the custom toolkit. * * @return \Drupal\Core\Image\ImageInterface * The image object. */
  protected function getImage(): ImageInterface {
    $image_factory = \Drupal::service('image.factory');
    $file = current($this->drupalGetTestFiles('image'));
    $image = $image_factory->get($file->uri, 'test');
    $this->assertTrue($image->isValid());
    return $image;
  }

  /** * Asserts the effect processing of an image effect plugin. * * @param string[] $expected_operations * String array containing the operation names, e.g. load, save, crop, etc. * @param string $effect_name * The name of the image effect to test. * @param array $data * The data to be passed to the image effect. */

  public static function weekDaysOrdered($weekdays) {
    $first_day = \Drupal::config('system.date')->get('first_day');
    if ($first_day > 0) {
      for ($i = 1; $i <= $first_day; $i++) {
        // Reset the array to the first element.         reset($weekdays);
        // Retrieve the first week day value.         $last = current($weekdays);
        // Store the corresponding key.         $key = key($weekdays);
        // Remove this week day from the beginning of the array.         unset($weekdays[$key]);
        // Add this week day to the end of the array.         $weekdays[$key] = $last;
      }
    }
    return $weekdays;
  }

  
foreach ($class->getMethods() as $method) {
                $this->defaultRouteIndex = 0;
                $routeNamesBefore = array_keys($collection->all());
                foreach ($this->getAnnotations($method) as $annot) {
                    $this->addRoute($collection, $annot, $globals, $class, $method);
                    if ('__invoke' === $method->name) {
                        $fqcnAlias = true;
                    }
                }

                if (1 === $collection->count() - \count($routeNamesBefore)) {
                    $newRouteName = current(array_diff(array_keys($collection->all()), $routeNamesBefore));
                    $collection->addAlias(sprintf('%s::%s', $class->name, $method->name), $newRouteName);
                }
            }
            if (0 === $collection->count() && $class->hasMethod('__invoke')) {
                $globals = $this->resetGlobals();
                foreach ($this->getAnnotations($class) as $annot) {
                    $this->addRoute($collection, $annot, $globals, $class, $class->getMethod('__invoke'));
                    $fqcnAlias = true;
                }
            }
            if ($fqcnAlias && 1 === $collection->count()) {
                
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