QuickHashIntHash::exists

(PECL quickhash >= Unknown)

QuickHashIntHash::existsThis method checks whether a key is part of the hash

Beschreibung

public QuickHashIntHash::exists(int $key): bool

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

Parameter-Liste

key

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

Rückgabewerte

Returns true when the entry was found, or false when the entry is not found.

Beispiele

Beispiel #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";
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

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

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