IT. Expert System.

PHP

This factory method creates a hash from a file


QuickHashIntHash::loadFromFile

(PECL quickhash >= Unknown)

QuickHashIntHash::loadFromFileThis factory method creates a hash from a file

Description

public static QuickHashIntHash QuickHashIntHash::loadFromFile ( string $filename [, int $options ] )

This factory method creates a new hash from a definition file on disk. The file format consists of a signature 'QH\0x11\0', the number of elements as a 32 bit signed integer in system Endianness, followed by 32 bit signed integers packed together in the Endianness that the system that the code runs on uses. For each hash 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. An example could be:

Example #1 QuickHash IntHash file format

00000000 51 48 11 00 02 00 00 00 01 00 00 00 01 00 00 00 |QH..............| 00000010 03 00 00 00 09 00 00 00       |........| 00000018

Example #2 QuickHash IntHash file format

header signature ('QH'; key type: 1; value type: 1; filler: \0x00) 00000000 51 48 11 00 number of elements: 00000004 02 00 00 00 data string: 00000000 01 00 00 00 01 00 00 00 03 00 00 00 09 00 00 00 key/value 1 (key = 1, value = 1) 01 00 00 00 01 00 00 00 key/value 2 (key = 3, value = 9) 03 00 00 00 09 00 00 00

Parameters

filename

The filename of the file to read the hash from.

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.

Return Values

Returns a new QuickHashIntHash.

Examples

Example #3 QuickHashIntHash::loadFromFile() example

<?php
$file 
dirname__FILE__ ) . "/simple.hash";
$hash QuickHashIntHash::loadFromFile(
    
$file,
    
QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC
);
foreach( 
range00x0f ) as $key )
{
    
printf"Key %3d (%2x) is %s\n",
        
$key$key
        
$hash->exists$key ) ? 'set' 'unset'
    
);
}
?>

The above example will output something similar to:

 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 



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 238 / 158735216. Delta: 0.00403 с