QuickHashIntHash::exists
(PECL quickhash >= Unknown)
QuickHashIntHash::exists — This method checks whether a key is part of the hash
Beskrivelse
public bool QuickHashIntHash::exists
( int
$key
)This method checks whether an entry with the provided key exists in the hash.
Parametre
-
key -
The key of the entry to check for whether it exists in the hash.
Returnerings Værdier
Returns TRUE when the entry was found, or FALSE when the entry is not
found.
Eksempler
Eksempel #1 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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