$temp = new admin_settingpage('performance', get_string('performance', 'admin'));
$temp->add(new admin_setting_special_selectsetup('memorylimit', get_string('memorylimit', 'admin'),
- get_string('configmemorylimit', 'admin'), '128M',
+ get_string('configmemorylimit', 'admin'), 0,
+ // if this option is set to 0, default 128M will be used
array( '64M' => '64M',
- '128M' => '128M',
+ '0' => '128M',
'256M' => '256M',
'1024M' => '1024M'
)));