Generator::valid
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
Generator::valid — 检查迭代器是否被关闭
说明
public Generator::valid(): bool参数
此函数没有参数。
返回值
如果迭代器已被关闭返回 false
,否则返回 true
。
User Contributed Notes 1 note
up down 2 Igor Frolov ¶3 years ago
Notice if you call it with open empty generator, it will close while checking.
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官方地址:https://www.php.net/manual/en/generator.valid.php