FieldtypeInteger

int when a value is present, empty string '' when blank.

// Get
$page->int_field         // int, or '' when blank
(int) $page->int_field   // always int (blank becomes 0)

// Set
$page->int_field = 42;
$page->int_field = -10;
$page->int_field = '';   // clear the value
$page->save('int_field');

// Exact match
$pages->find('int_field=42');

// No value
$pages->find('int_field=""');

// Comparison
$pages->find('int_field>100');
$pages->find('int_field<0');
$pages->find('int_field>=10, int_field<=100'); // range

Note on zero vs blank: By default 0 and blank "" are equivalent in selectors. Enable the zeroNotEmpty field setting to make them distinct — then field=0 matches only pages with the value 0, and field="" matches only pages with no value.

• The blank/default value is '' (empty string), not 0.
• Setting zeroNotEmpty=1 makes 0 and blank distinct in selectors.
• Setting defaultValue assigns a fallback for pages with no value entered.
• Compatible fieldtypes: FieldtypeInteger, FieldtypeFloat, FieldtypeDecimal, FieldtypeText.
• Database column: int NOT NULL.