QuickHashIntSet::exists
(PECL quickhash >= Unknown)
QuickHashIntSet::exists — This method checks whether a key is part of the set
Beschreibung
public QuickHashIntSet::exists(int
$key): boolThis method checks whether an entry with the provided key exists in the set.
Parameter-Liste
-
key -
The key of the entry to check for whether it exists in the set.
Rückgabewerte
Returns true when the entry was found, or false when the entry is not
found.
Beispiele
Beispiel #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";
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Creating set: 1263588703.0748 Adding elements: 1263588703.0757 Doing 1000 tests: 1263588703.7851 Done, 898 found: 1263588703.7897
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