class Explode

Same name and namespace in other branches
  1. 9 core/modules/migrate/src/Plugin/migrate/process/Explode.php \Drupal\migrate\Plugin\migrate\process\Explode
  2. 8.9.x core/modules/migrate/src/Plugin/migrate/process/Explode.php \Drupal\migrate\Plugin\migrate\process\Explode
  3. 10 core/modules/migrate/src/Plugin/migrate/process/Explode.php \Drupal\migrate\Plugin\migrate\process\Explode

Splits the source string into an array of strings, using a delimiter.

This plugin creates an array of strings by splitting the source parameter on boundaries formed by the delimiter.

Available configuration keys:

  • source: The source string.
  • limit: (optional)
    • If limit is set and positive, the returned array will contain a maximum of limit elements with the last element containing the rest of string.
    • If limit is set and negative, all components except the last -limit are returned.
    • If the limit parameter is zero, then this is treated as 1.
  • delimiter: The boundary string.
  • strict: (optional) When this boolean is TRUE, the source should be strictly a string. If FALSE is passed, the source value is casted to a string before being split. Also, in this case, the values casting to empty strings are converted to empty arrays, instead of an array with a single empty string item ['']. Defaults to TRUE.


    plugin: explode
    source: foo
    delimiter: /

If foo is "node/1", then bar will be ['node', '1']. The PHP equivalent of this would be:

$bar = explode('/', $foo);

    plugin: explode
    source: foo
    limit: 2
    delimiter: /

If foo is "node/1/edit", then bar will be ['node', '1/edit']. The PHP equivalent of this would be:

$bar = explode('/', $foo, 2);

If the 'strict' configuration is set to FALSE, the input value is casted to a string before being spilt:

    plugin: explode
    source: foo
    delimiter: /
    strict: false

If foo is 123 (as integer), then bar will be ['123']. If foo is TRUE, then bar will be ['1']. The PHP equivalent of this would be:

$bar = explode('/', (string) 123);
$bar = explode('/', (string) TRUE);

If the 'strict' configuration is set to FALSE, the source value casting to an empty string are converted to an empty array. For example, with the last configuration, if foo is '', NULL or FALSE, then bar will be [].


Expanded class hierarchy of Explode

See also


1 file declares its use of Explode
ExplodeTest.php in core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
7 string references to 'Explode'
d6_field_instance_label_description_translation.yml in core/modules/config_translation/migrations/d6_field_instance_label_description_translation.yml
d6_url_alias.yml in core/modules/path/migrations/d6_url_alias.yml
d7_field_instance.yml in core/modules/field/migrations/d7_field_instance.yml
d7_theme_settings.yml in core/modules/system/migrations/d7_theme_settings.yml
d7_url_alias.yml in core/modules/path/migrations/d7_url_alias.yml

... See full list


core/modules/migrate/src/Plugin/migrate/process/Explode.php, line 91


View source
class Explode extends ProcessPluginBase {
     * {@inheritdoc}
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        if (empty($this->configuration['delimiter'])) {
            throw new MigrateException('delimiter is empty');
        $strict = array_key_exists('strict', $this->configuration) ? $this->configuration['strict'] : TRUE;
        if ($strict && !is_string($value)) {
            throw new MigrateException(sprintf('%s is not a string', var_export($value, TRUE)));
        elseif (!$strict) {
            // Check if the incoming value can cast to a string.
            $original = $value;
            if (!is_string($original) && $original != ($value = @strval($value))) {
                throw new MigrateException(sprintf('%s cannot be casted to a string', var_export($original, TRUE)));
            // Empty strings should be exploded to empty arrays.
            if ($value === '') {
                return [];
        $limit = $this->configuration['limit'] ?? PHP_INT_MAX;
        return explode($this->configuration['delimiter'], $value, $limit);
     * {@inheritdoc}
    public function multiple() {
        return TRUE;



Title Sort descending Modifiers Object type Summary Overriden Title Overrides
Explode::multiple public function Indicates whether the returned value requires multiple handling. Overrides ProcessPluginBase::multiple
Explode::transform public function Performs the associated process. Overrides ProcessPluginBase::transform
PluginInspectionInterface::getPluginDefinition public function Gets the definition of the plugin implementation. 6
PluginInspectionInterface::getPluginId public function Gets the plugin_id of the plugin instance. 2
ProcessPluginBase::$stopPipeline protected property Determines if processing of the pipeline is stopped.
ProcessPluginBase::isPipelineStopped public function Determines if the pipeline should stop processing. Overrides MigrateProcessInterface::isPipelineStopped
ProcessPluginBase::reset public function Resets the internal data of a plugin. Overrides MigrateProcessInterface::reset
ProcessPluginBase::stopPipeline protected function Stops pipeline processing after this plugin finishes.

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