array_splice - PHP code example

Syntax of the PHP Function Array_Splice

Arrays are one of the most important and widely used data structures in PHP. They are a powerful way to store data in an organized and efficient manner, making it easy for developers to manipulate them. Fortunately, PHP provides several built-in functions to work with arrays such as the array_splice() function.

The array_splice() is a function that can be used to remove or replace elements from an array, and it operates on the input array in place. The function takes three required parameters, including the input array, the index where the modification should start, and the number of elements to remove. It can also take an optional parameter for the replacement values that will be inserted into the array.

Syntax of the php function array_splice

The main purpose of this article is to provide a detailed understanding of the php function array_splice and how it works. In this article, we will explore the function’s syntax and how it can be implemented in your code to perform various tasks like removing or replacing array elements.

array_splice() has an array, start, length, and replacement parameter. The array parameter represents the input array that you want to splice, start is the number of elements from the beginning of the array that you want to remove, and length is the number of elements you want to remove if it is not specified, it will be removed from the end of the array. The replacement array is the array that you want to insert to replace the removed elements, it can be an associative or indexed array.

array_splice example

$op = $element_stack[$i];
        if (!empty($precedence[$op])) {
          if ($op == ":") {
            $f = $element_stack[$i - 2] . "):" . $element_stack[$i - 1] . ")";
          }
          elseif ($op == "?") {
            $f = "(" . $element_stack[$i - 2] . "?(" . $element_stack[$i - 1];
          }
          else {
            $f = "(" . $element_stack[$i - 2] . $op . $element_stack[$i - 1] . ")";
          }
          array_splice($element_stack, $i - 2, 3, $f);
          break;
        }
      }
    }

    // If only one element is left, the number of operators is appropriate.     return count($element_stack) == 1 ? $return : FALSE;
  }

  /** * Tokenize the formula. * * @param string $formula * A string containing the arithmetic formula. * * @return array * List of arithmetic tokens identified in the formula. */

    $sidebars_widgets[ $sidebar_id ] = $sidebar;

    // Remove old position.     if ( ! isset( $_POST['delete_widget'] ) ) {
        foreach ( $sidebars_widgets as $key => $sb ) {
            if ( is_array( $sb ) ) {
                $sidebars_widgets[ $key ] = array_diff( $sb, array( $widget_id ) );
            }
        }
        array_splice( $sidebars_widgets[ $sidebar_id ], $position, 0, $widget_id );
    }

    wp_set_sidebars_widgets( $sidebars_widgets );
    wp_redirect( admin_url( 'widgets.php?message=0' ) );
    exit;
}

// Remove inactive widgets without JS. if ( isset( $_POST['removeinactivewidgets'] ) ) {
    check_admin_referer( 'remove-inactive-widgets', '_wpnonce_remove_inactive_widgets' );

/** * Disables the Automattic widgets plugin, which was merged into core. * * @since 2.2.0 */
function maybe_disable_automattic_widgets() {
    $plugins = __get_option( 'active_plugins' );

    foreach ( (array) $plugins as $plugin ) {
        if ( 'widgets.php' === basename( $plugin ) ) {
            array_splice( $plugins, array_search( $plugin, $plugins, true ), 1 );
            update_option( 'active_plugins', $plugins );
            break;
        }
    }
}

/** * Disables the Link Manager on upgrade if, at the time of upgrade, no links exist in the DB. * * @since 3.5.0 * * @global int $wp_current_db_version The old (current) database version. * @global wpdb $wpdb WordPress database abstraction object. */

$response = array(
            'code'    => 0,
            'message' => '',
        );

        /* * If a redirection has taken place, The headers for each page request may have been passed. * In this case, determine the final HTTP header and parse from there. */
        for ( $i = count( $headers ) - 1; $i >= 0; $i-- ) {
            if ( ! empty( $headers[ $i ] ) && ! str_contains( $headers[ $i ], ':' ) ) {
                $headers = array_splice( $headers, $i );
                break;
            }
        }

        $cookies    = array();
        $newheaders = array();
        foreach ( (array) $headers as $tempheader ) {
            if ( empty( $tempheader ) ) {
                continue;
            }

$url['path'] = self::removeDotSegments($url['path'] ?? '');
            } else {
                if (null === $url['path']) {
                    $url['path'] = $base['path'];
                    $url['query'] ??= $base['query'];
                } else {
                    if ('/' !== $url['path'][0]) {
                        if (null === $base['path']) {
                            $url['path'] = '/'.$url['path'];
                        } else {
                            $segments = explode('/', $base['path']);
                            array_splice($segments, -1, 1, [$url['path']]);
                            $url['path'] = implode('/', $segments);
                        }
                    }

                    $url['path'] = self::removeDotSegments($url['path']);
                }

                $url['authority'] = $base['authority'];

                if ($queryDefaults) {
                    $url['query'] = '?'.self::mergeQueryString(substr($url['query'] ?? '', 1), $queryDefaults, false);
                }

// Link the container node if a grandparent node exists.                     $grandparent = $this->_get_node( $parent->parent );

                    if ( $grandparent ) {
                        $container->parent = $grandparent->id;

                        $index = array_search( $parent, $grandparent->children, true );
                        if ( false === $index ) {
                            $grandparent->children[] = $container;
                        } else {
                            array_splice( $grandparent->children, $index, 1, array( $container ) );
                        }
                    }

                    $parent->parent = $container->id;
                }

                $parent = $container;
            }

            // Update the parent ID (it might have changed).             $node->parent = $parent->id;

            $outPlusOne = $out + 1;
            $bias = self::adaptBias($i - $oldi, $outPlusOne, 0 === $oldi);

            if (intdiv($i, $outPlusOne) > self::MAX_INT - $n) {
                throw new Exception('Integer overflow');
            }

            $n += intdiv($i, $outPlusOne);
            $i %= $outPlusOne;
            array_splice($output, $i++, 0, [mb_chr($n, 'utf-8')]);
        }

        return implode('', $output);
    }

    /** * @see https://tools.ietf.org/html/rfc3492#section-6.3 * * @param string $input * * @return string */

$row['conversion'] = 0;
            }
        }

        // Sets the correct limit         $limit = 25;
        if (strtolower($this->format) === 'csv') {
            $limit = \count($data);
        }

        $values = array_values($data);
        $splice = array_splice(
            $values,
            (int) $this->Request()->getParam('start'),
            (int) $this->Request()->getParam('limit', $limit)
        );

        $this->send($splice, \count($data));
    }

    /** * @return void */

function apply_block_core_search_border_style( $attributes, $property, $side, &$wrapper_styles, &$button_styles, &$input_styles ) {
    $is_button_inside = 'button-inside' === _wp_array_get( $attributes, array( 'buttonPosition' ), false );

    $path = array( 'style', 'border', $property );

    if ( $side ) {
        array_splice( $path, 2, 0, $side );
    }

    $value = _wp_array_get( $attributes, $path, false );

    if ( empty( $value ) ) {
        return;
    }

    if ( 'color' === $property && $side ) {
        $has_color_preset = str_contains( $value, 'var:preset|color|' );
        if ( $has_color_preset ) {

$this->error = $error;

        if (null !== $trace) {
            if (!$traceArgs) {
                foreach ($trace as &$frame) {
                    unset($frame['args'], $frame['this'], $frame);
                }
            }
        } elseif (null !== $traceOffset) {
            if (\function_exists('xdebug_get_function_stack') && $trace = @xdebug_get_function_stack()) {
                if (0 < $traceOffset) {
                    array_splice($trace, -$traceOffset);
                }

                foreach ($trace as &$frame) {
                    if (!isset($frame['type'])) {
                        // XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695                         if (isset($frame['class'])) {
                            $frame['type'] = '::';
                        }
                    } elseif ('dynamic' === $frame['type']) {
                        $frame['type'] = '->';
                    } elseif ('static' === $frame['type']) {

foreach ($args as $k => $v) {
            $values[$k] = !\is_scalar($v) && !$v instanceof Stub ? new CutStub($v) : $v;
        }
        if (null === $params) {
            parent::__construct($values, false);

            return;
        }
        if (\count($values) < \count($params)) {
            $params = \array_slice($params, 0, \count($values));
        } elseif (\count($values) > \count($params)) {
            $values[] = new EnumStub(array_splice($values, \count($params)), false);
            $params[] = $variadic;
        }
        if (['...'] === $params) {
            $this->dumpKeys = false;
            $this->value = $values[0]->value;
        } else {
            $this->value = array_combine($params, $values);
        }
    }

    private static function getParameters(string $function, ?string $class): array
    {

<?php     if ( $post_ids ) {
        /** * @global WP_Query $wp_query WordPress Query object. */
        global $wp_query;

        // Fake being in the loop.         $wp_query->in_the_loop = true;

        // Fetch 20 posts at a time rather than loading the entire table into memory.         while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) {
            $where = 'WHERE ID IN (' . implode( ',', $next_posts ) . ')';
            $posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" );

            // Begin Loop.             foreach ( $posts as $post ) {
                setup_postdata( $post );

                /** * Filters the post title used for WXR exports. * * @since 5.7.0 * * @param string $post_title Title of the current post. */

if (!isset($lightTrace[$i]['class']) && 'trigger_deprecation' === $lightTrace[$i]['function']) {
                    $file = $lightTrace[$i]['file'];
                    $line = $lightTrace[$i]['line'];
                    $lightTrace = \array_slice($lightTrace, 1 + $i);
                    break;
                }
            }
        }
        if (class_exists(DebugClassLoader::class, false)) {
            for ($i = \count($lightTrace) - 2; 0 < $i; --$i) {
                if (DebugClassLoader::class === ($lightTrace[$i]['class'] ?? null)) {
                    array_splice($lightTrace, --$i, 2);
                }
            }
        }
        if (!($throw || $this->scopedErrors & $type)) {
            for ($i = 0; isset($lightTrace[$i]); ++$i) {
                unset($lightTrace[$i]['args'], $lightTrace[$i]['object']);
            }
        }

        return $lightTrace;
    }

break;
                    }
                }
            }
        }

        foreach ($unmergedRows as $unmergedRowKey => $unmergedRow) {
            // we need to know if $unmergedRow will be merged or inserted into $rows             if (isset($rows[$unmergedRowKey]) && \is_array($rows[$unmergedRowKey]) && ($this->getNumberOfColumns($rows[$unmergedRowKey]) + $this->getNumberOfColumns($unmergedRows[$unmergedRowKey]) <= $this->numberOfColumns)) {
                foreach ($unmergedRow as $cellKey => $cell) {
                    // insert cell into row at cellKey position                     array_splice($rows[$unmergedRowKey], $cellKey, 0, [$cell]);
                }
            } else {
                $row = $this->copyRow($rows, $unmergedRowKey - 1);
                foreach ($unmergedRow as $column => $cell) {
                    if (!empty($cell)) {
                        $row[$column] = $unmergedRow[$column];
                    }
                }
                array_splice($rows, $unmergedRowKey, 0, [$row]);
            }
        }

// Test delta limit.     $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $view->preview();

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $pure_items = array_splice($pure_items, 0, 3);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }

      // Check that the amount of items is limited.       $this->assertEquals(implode(', ', $items), $rendered_field);
    }

    // Test that an empty field is rendered without error.     $view->style_plugin->getField(4, $this->fieldStorages[4]->getName());
    $view->destroy();