key
Generator::key
Get the yielded key
ENTITY
public
mixed
Generator::key
Gets the key of the yielded value.
ENTITY ENTITY
ENTITY
Returns the yielded key.
ENTITY
Generator::key example
<?php
function Gen()
{
yield 'key' => 'value';
}
$gen = Gen();
echo "{$gen->key()} => {$gen->current()}";
ENTITY
key => value
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