(PECL quickhash >= Unknown)
QuickHashIntSet::loadFromFile — This factory method creates a set from a file
$filename, int $size = ?, int $options = ?): QuickHashIntSetThis 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.
filenameThe 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.
Returns a new QuickHashIntSet.
示例 #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'
);
}
?>以上示例的输出类似于：
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