Ds\Map::first
Ds\Map::first
(PECL ds >= 1.0.0)
Ds\Map::first — Returns the first pair in the map.
Description
public Ds\Pair Ds\Map::first ( void )
Returns the first pair in the map.
Parameters
This function has no parameters.
Return Values
The first pair in the map.
Errors/Exceptions
UnderflowException if empty.
Examples
Example #1 Ds\Map::first() example
<?php $map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]); var_dump($map->first()); ?>
The above example will output something similar to:
object(Ds\Pair)#2 (2) {
["key"]=>
string(1) "a"
["value"]=>
int(1)
}
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https://secure.php.net/manual/en/ds-map.first.php
