# SolrDocument::valid

(PECL solr >= 0.9.2)

SolrDocument::valid — Checks if the current position internally is still valid

### 说明

public SolrDocument::valid(): bool

Checks if the current position internally is still valid. It is used during foreach operations.

### 参数

此函数没有参数。

### 返回值

Returns `true` on success and `false` if the current position is no longer valid.

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