(PECL quickhash >= Unknown)
This method checks whether a key is part of the hash
public bool QuickHashIntHash::exists ( int $key )
This method checks whether an entry with the provided key exists in the hash.
Parameters:
key
The key of the entry to check for whether it exists in the hash.
Returns:
Returns TRUE
when the entry was found, or FALSE
when the entry is not found.
Examples:
QuickHashIntHash::exists() example
<?php //generate 200000 elements $array = range( 0, 199999 ); $existingEntries = array_rand( array_flip( $array ), 180000 ); $testForEntries = array_rand( array_flip( $array ), 1000 ); $foundCount = 0; echo "Creating hash: ", microtime( true ), "\n"; $hash = new QuickHashIntHash( 100000 ); echo "Adding elements: ", microtime( true ), "\n"; foreach( $existingEntries as $key ) { $hash->add( $key, 56 ); } echo "Doing 1000 tests: ", microtime( true ), "\n"; foreach( $testForEntries as $key ) { $foundCount += $hash->exists( $key ); } echo "Done, $foundCount found: ", microtime( true ), "\n"; ?>
The above example will output something similar to:
Creating hash: 1263588703.0748 Adding elements: 1263588703.0757 Doing 1000 tests: 1263588703.7851 Done, 898 found: 1263588703.7897
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