QuickHashIntHash::exists

(PECL quickhash >= Unknown)

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

설명

public bool QuickHashIntHash::exists ( int $key )

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

인수

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

반환값

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

예제

Example #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";
?>

위 예제의 출력 예시:

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