QuickHashIntHash::exists
(PECL quickhash >= Unknown)
QuickHashIntHash::exists — This method checks whether a key is part of the hash
Description
This method checks whether an entry with the provided key exists in the hash.
Liste de paramètres
-
key -
The key of the entry to check for whether it exists in the hash.
Valeurs de retour
Returns true when the entry was found, or false when the entry is not
found.
Exemples
Exemple #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";
?>Résultat de l'exemple ci-dessus est similaire à :
Creating hash: 1263588703.0748 Adding elements: 1263588703.0757 Doing 1000 tests: 1263588703.7851 Done, 898 found: 1263588703.7897
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