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/Drupal 8

public function Schema::fieldNames

public Schema::fieldNames($fields)

Return an array of field names from an array of key/index column specifiers.

This is usually an identity function but if a key/index uses a column prefix specification, this function extracts just the name.

Parameters

$fields: An array of key/index column specifiers.

Return value

An array of field names.

File

core/lib/Drupal/Core/Database/Schema.php, line 612

Class

Schema
Provides a base implementation for Database Schema.

Namespace

Drupal\Core\Database

Code

public function fieldNames($fields) {
  $return = array();
  foreach ($fields as $field) {
    if (is_array($field)) {
      $return[] = $field[0];
    }
    else {
      $return[] = $field;
    }
  }
  return $return;
}

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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Database!Schema.php/function/Schema::fieldNames/8.1.x