File "seek.md"
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```php
seek (
string $selector
, array &$ret
, string $parent_cmd
[, bool $lowercase = false ]
)
```
| Parameter | Description |
|--------------|------------------------------------------------------------|
| `selector` | The current selector. |
| `ret` | Previous return value (starting point). |
| `parent_cmd` | The combinator used before the current selector. |
| `lowercase` | Matches tag names case insensitive (lowercase) if enabled. |
Starts by searching for child elements of `$ret` that match the specified selector. Adds matching elements to `$ret` (for the next iteration).