QuickHashIntHash::loadFromString

(PECL quickhash >= Unknown)

QuickHashIntHash::loadFromString — This factory method creates a hash from a string

Beschreibung

public static QuickHashIntHash::loadFromString ( string $contents [, int $options ] ) : QuickHashIntHash

This factory method creates a new hash from a definition in a string. The file format consists of 32 bit signed integers packed together in the Endianness that the system that the code runs on uses. For each element there are two 32 bit signed integers stored. The first of each element is the key, and the second is the value belonging to the key.

Parameter-Liste

contents: The string containing a serialized format of the hash.
options: The same options that the class' constructor takes; except that the size option is ignored. It is automatically calculated to be the same as the number of entries in the hash, rounded up to the nearest power of two with a maximum limit of 4194304.

Rückgabewerte

Returns a new QuickHashIntHash.

Beispiele

Beispiel #1 QuickHashIntHash::loadFromString() example


<?php
$contents = file_get_contents( dirname( __FILE__ ) . "/simple.hash" );
$hash = QuickHashIntHash::loadFromString(
    $contents,
    QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC
);
foreach( range( 0, 0x0f ) as $key )
{
    printf( "Key %3d (%2x) is %s\n",
        $key, $key, 
        $hash->exists( $key ) ? 'set' : 'unset'
    );
}
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Key   0 ( 0) is unset
Key   1 ( 1) is set
Key   2 ( 2) is set
Key   3 ( 3) is set
Key   4 ( 4) is unset
Key   5 ( 5) is set
Key   6 ( 6) is unset
Key   7 ( 7) is set
Key   8 ( 8) is unset
Key   9 ( 9) is unset
Key  10 ( a) is unset
Key  11 ( b) is set
Key  12 ( c) is unset
Key  13 ( d) is set
Key  14 ( e) is unset
Key  15 ( f) is unset