View file File name : find.md Content :```php find ( string $selector [, int $idx = null ] [, bool $lowercase = false ] ) : mixed ``` | Parameter | Description | |-------------|------------------------------------------------------------| | `selector` | [CSS](https://www.w3.org/TR/selectors/) selector. | | `idx` | Index of element to return. | | `lowercase` | Matches tag names case insensitive (lowercase) if enabled. | Finds one or more nodes in the current document, using CSS selectors. * Returns null if no match was found. * Returns an array of [`HtmlNode`](index.md) if `$idx` is null. * Returns an object of type [`HtmlNode`](index.md) if `$idx` is anything __but__ null. ## Supported Selectors | Selector | Description | |------------------------------------|------------------------------------------------------------------------------------------------| | `*` | [Universal selector](https://www.w3.org/TR/selectors/#the-universal-selector) | | `E` | [Type (tag name) selector](https://www.w3.org/TR/selectors/#type-selectors) | | `E#id` | [ID selector](https://www.w3.org/TR/selectors/#id-selectors) | | `E.class` | [Class selector](https://www.w3.org/TR/selectors/#class-html) | | `E[attr]` | [Attribute selector](https://www.w3.org/TR/selectors/#attribute-selectors) | | `E[attr="value"]` | [Attribute selector](https://www.w3.org/TR/selectors/#attribute-selectors) | | `E[attr="value"] i` | [Case-sensitivity](https://www.w3.org/TR/selectors/#attribute-case) | | `E[attr="value"] s` | [Case-sensitivity](https://www.w3.org/TR/selectors/#attribute-case) | | `E[attr~="value"]` | [Attribute selector](https://www.w3.org/TR/selectors/#attribute-selectors) | | `E[attr^="value"]` | [Substring matching attribute selector](https://www.w3.org/TR/selectors/#attribute-substrings) | | `E[attr$="value"]` | [Substring matching attribute selector](https://www.w3.org/TR/selectors/#attribute-substrings) | | `E[attr*="value"]` | [Substring matching attribute selector](https://www.w3.org/TR/selectors/#attribute-substrings) | | <code>E[attr|="value"]</code> | [Attribute selector](https://www.w3.org/TR/selectors/#attribute-selectors) | | `E F` | [Descendant combinator](https://www.w3.org/TR/selectors/#descendant-combinators) | | `E > F` | [Child combinator](https://www.w3.org/TR/selectors/#child-combinators) | | `E + F` | [Next-sibling combinator](https://www.w3.org/TR/selectors/#adjacent-sibling-combinators) | | `E ~ F` | [Subsequent-sibling combinator](https://www.w3.org/TR/selectors/#general-sibling-combinators) | | `E, F` | [Selector list](https://www.w3.org/TR/selectors/#selector-list) | | `E:not(s)` | [Negation pseudo-class](https://www.w3.org/TR/selectors-3/#negation) |