backdrop_check_memory_limit in core/includes/bootstrap.inc
Compares the memory required for an operation to the available memory.
ckeditor_image_upload in core/modules/ckeditor/ckeditor.pages.inc
Menu callback; Saves images uploaded via copy/paste into the editor.
CommonSizeUnitTestCase::testCommonParseSize in core/modules/simpletest/tests/common.test
Check that parse_size() returns the proper byte sizes.
CommonSizeUnitTestCase::testCommonParseSizeFormatSize in core/modules/simpletest/tests/common.test
Cross-test parse_size() and format_size().
file_field_widget_upload_validators in core/modules/file/file.field.inc
Retrieves the upload validators for a file field.
file_get_upload_validators in core/modules/file/file.pages.inc
Retrieves the upload validators for a file.
file_upload_max_size in core/includes/file.inc
Determines the maximum file upload size by querying the PHP settings.
filter_format_editor_image_form in core/modules/filter/filter.pages.inc
Form callback: Display a form for inserting/editing an image.
filter_format_editor_link_form in core/modules/filter/filter.pages.inc
Form callback: Display a form for inserting/editing a link or uploading a file.
_file_generic_settings_max_filesize in core/modules/file/file.field.inc
Render API callback: Validates the maximum uplodad size field.