PHP Manual
QuickHashIntStringHash
This method checks whether a key is part of the hash

QuickHashIntStringHash::exists

(PECL quickhash >= Unknown)

QuickHashIntStringHash::exists — This method checks whether a key is part of the hash

说明

public QuickHashIntStringHash::exists ( int $key ) : bool

This method checks whether an entry with the provided key exists in the hash.

参数

key: The key of the entry to check for whether it exists in the hash.

返回值

Returns TRUE when the entry was found, or FALSE when the entry is not found.

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