QuickHashIntSet::exists

(PECL quickhash >= Unknown)

QuickHashIntSet::exists — This method checks whether a key is part of the set

Descrizione

public bool QuickHashIntSet::exists ( int $key )

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

Elenco dei parametri

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

Valori restituiti

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

Esempi

Example #1 QuickHashIntSet::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 set: ", microtime( true ), "\n";
$set = new QuickHashIntSet( 100000 );
echo "Adding elements: ", microtime( true ), "\n";
foreach( $existingEntries as $key )
{
     $set->add( $key );
}

echo "Doing 1000 tests: ", microtime( true ), "\n";
foreach( $testForEntries as $key )
{
     $foundCount += $set->exists( $key );
}
echo "Done, $foundCount found: ", microtime( true ), "\n";
?>

Il precedente esempio visualizzerà qualcosa simile a:

Creating set: 1263588703.0748
Adding elements: 1263588703.0757
Doing 1000 tests: 1263588703.7851
Done, 898 found: 1263588703.7897