QuickHashIntHash::exists

Contents

(PECL quickhash >= Unknown)

QuickHashIntHash::exists — This method checks whether a key is part of the hash

Description

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

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

PHP: QuickHashIntHash::exists - Manual Home of Manuel PHP Contents Haut

Parameters

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

PHP: QuickHashIntHash::exists - Manual Home of Manuel PHP Contents Haut

Return Values

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

PHP: QuickHashIntHash::exists - Manual Home of Manuel PHP Contents Haut

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

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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-quickhashinthash.exists.html

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References

Manuel PHP : http://php.net

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