QuickHashIntHash::exists
(PECL quickhash >= Unknown)
QuickHashIntHash::exists — This method checks whether a key is part of the hash
Beschreibung
public QuickHashIntHash::exists(int
$key): boolThis 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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