QuickHashIntSet::loadFromFile
QuickHashIntSet::loadFromFile
(PECL quickhash >= Unknown)
QuickHashIntSet::loadFromFile — This factory method creates a set from a file
Description
public static QuickHashIntSet QuickHashIntSet::loadFromFile ( string $filename [, int $size [, int $options ]] )
This factory method creates a new set from a definition file on disk. The file format consists of 32 bit signed integers packed together in the Endianness that the system that the code runs on uses.
Parameters
filename
The filename of the file to read the set from.
size
The amount of bucket lists to configure. The number you pass in will be automatically rounded up to the next power of two. It is also automatically limited from 4 to 4194304.
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 set, rounded up to the nearest power of two with a maximum limit of 4194304.
Return Values
Returns a new QuickHashIntSet.
Examples
Example #1 QuickHashIntSet::loadFromFile() example
<?php
$file = dirname( __FILE__ ) . "/simple.set";
$set = QuickHashIntSet::loadFromFile(
$file,
QuickHashIntSet::DO_NOT_USE_ZEND_ALLOC
foreach( range( 0, 0x0f ) as $key )
{
printf( "Key %3d (%2x) is %s\n",
$key, $key,
$set->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
← QuickHashIntSet::getSize
QuickHashIntSet::loadFromString →
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/quickhashintset.loadfromfile.php
