QuickHashIntHash::exists
(PECL quickhash >= Unknown)
QuickHashIntHash::exists — This method checks whether a key is part of the hash
Descrizione
This method checks whether an entry with the provided key exists in the hash.
Elenco dei parametri
-
key -
The key of the entry to check for whether it exists in the hash.
Valori restituiti
Returns true when the entry was found, or false when the entry is not
found.
Esempi
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";
?>Il precedente esempio visualizzerà qualcosa simile a:
Creating hash: 1263588703.0748 Adding elements: 1263588703.0757 Doing 1000 tests: 1263588703.7851 Done, 898 found: 1263588703.7897
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