QuickHashIntHash::exists

This method checks whether a key is part of the hash

Description

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.

Return Values

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

Examples

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";
?>

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