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Yaf_Config_Simple::key

(Yaf >=1.0.0)

Yaf_Config_Simple::key — 获取当前配置项的键

说明

public function Yaf_Config_Simple::key(): mixed

返回迭代过程中当前配置项的键。

参数

此函数没有参数。

返回值

当前配置项的键（字符串或整数），如果位置无效则返回 false。

示例

示例 #1 Yaf_Config_Simple::key() 示例

<?php
$config = new Yaf_Config_Simple([
    'application' => ['name' => 'MyApp'],
    'database'    => ['host' => 'localhost'],
]);

for ($config->rewind(); $config->valid(); $config->next()) {
    echo $config->key(), "\n";
}
?>

以上示例的输出类似于：

application
database

参见