| CacheTestCase::assertCacheExists | modules/simpletest/tests/cache.test | Assert or a cache entry exists. |
| CacheTestCase::checkCacheExists | modules/simpletest/tests/cache.test | Check whether or not a cache entry exists. |
| CommentHelperCase::commentExists | modules/comment/comment.test | Checks current page for specified comment. |
| DatabaseCondition::exists | includes/database/query.inc | Implements QueryConditionInterface::exists(). |
| DatabaseCondition::notExists | includes/database/query.inc | Implements QueryConditionInterface::notExists(). |
| DatabaseRegressionTestCase::testDBFieldExists | modules/simpletest/tests/database_test.test | Test the db_field_exists() function. |
| DatabaseRegressionTestCase::testDBIndexExists | modules/simpletest/tests/database_test.test | Test the db_index_exists() function. |
| DatabaseRegressionTestCase::testDBTableExists | modules/simpletest/tests/database_test.test | Test the db_table_exists() function. |
| DatabaseSchema::fieldExists | includes/database/schema.inc | Check if a column exists in the given table. |
| DatabaseSchema::indexExists | includes/database/schema.inc | Checks if an index exists in the given table. |
| DatabaseSchema::tableExists | includes/database/schema.inc | Check if a table exists. |
| DatabaseSchema_mysql::fieldExists | includes/database/mysql/schema.inc | Check if a column exists in the given table. |
| DatabaseSchema_mysql::indexExists | includes/database/mysql/schema.inc | Checks if an index exists in the given table. |
| DatabaseSchema_mysql::tableExists | includes/database/mysql/schema.inc | Check if a table exists. |
| DatabaseSchema_pgsql::constraintExists | includes/database/pgsql/schema.inc | Helper function: check if a constraint (PK, FK, UK) exists. |
| DatabaseSchema_pgsql::indexExists | includes/database/pgsql/schema.inc | Checks if an index exists in the given table. |
| DatabaseSchema_sqlite::fieldExists | includes/database/sqlite/schema.inc | Check if a column exists in the given table. |
| DatabaseSchema_sqlite::indexExists | includes/database/sqlite/schema.inc | Checks if an index exists in the given table. |
| DatabaseSchema_sqlite::tableExists | includes/database/sqlite/schema.inc | Check if a table exists. |
| DatabaseSelectSubqueryTestCase::testExistsSubquerySelect | modules/simpletest/tests/database_test.test | Test EXISTS subquery conditionals on SELECT statements. |
| DatabaseSelectSubqueryTestCase::testNotExistsSubquerySelect | modules/simpletest/tests/database_test.test | Test NOT EXISTS subquery conditionals on SELECT statements. |
| db_field_exists | includes/database/database.inc | Checks if a column exists in the given table. |
| db_index_exists | includes/database/database.inc | Checks if an index exists in the given table. |
| db_table_exists | includes/database/database.inc | Checks if a table exists. |
| DeleteQuery::exists | includes/database/query.inc | Implements QueryConditionInterface::exists(). |
| DeleteQuery::notExists | includes/database/query.inc | Implements QueryConditionInterface::notExists(). |
| DrupalCacheArray::offsetExists | includes/bootstrap.inc | Implements ArrayAccess::offsetExists(). |
| drupal_array_nested_key_exists | includes/common.inc | Determines whether a nested array contains the requested keys. |
| FileFieldTestCase::assertFileEntryExists | modules/file/tests/file.test | Asserts that a file exists in the database. |
| FileFieldTestCase::assertFileEntryNotExists | modules/file/tests/file.test | Asserts that a file does not exist in the database. |
| FileFieldTestCase::assertFileExists | modules/file/tests/file.test | Asserts that a file exists physically on disk. |
| FileFieldTestCase::assertFileNotExists | modules/file/tests/file.test | Asserts that a file does not exist on disk. |
| file_example_file_check_exists_submit | file_example/file_example.module | Submit handler to check existence of a file. |
| filter_format_exists | modules/filter/filter.module | Determines if a text format exists. |
| menu_edit_menu_name_exists | modules/menu/menu.admin.inc | Returns whether a menu name already exists. |
| MergeQuery::exists | includes/database/query.inc | Implements QueryConditionInterface::exists(). |
| MergeQuery::notExists | includes/database/query.inc | Implements QueryConditionInterface::notExists(). |
| module_exists | includes/module.inc | Determine whether a given module exists. |
| QueryConditionInterface::exists | includes/database/query.inc | Sets a condition that the specified subquery returns values. |
| QueryConditionInterface::notExists | includes/database/query.inc | Sets a condition that the specified subquery returns no values. |
| SelectQuery::exists | includes/database/select.inc | |
| SelectQuery::havingExists | includes/database/select.inc | |
| SelectQuery::havingNotExists | includes/database/select.inc | |
| SelectQuery::notExists | includes/database/select.inc | |
| SelectQueryExtender::exists | includes/database/select.inc | |
| SelectQueryExtender::notExists | includes/database/select.inc | |