IT. Expert System.

PHP

Start buffering Phar write operations, do not modify the Phar object on disk


Phar::startBuffering

(PHP >= 5.3.0, PECL phar >= 1.0.0)

Phar::startBufferingStart buffering Phar write operations, do not modify the Phar object on disk

Description

void Phar::startBuffering ( void )

Although technically unnecessary, the Phar::startBuffering() method can provide a significant performance boost when creating or modifying a Phar archive with a large number of files. Ordinarily, every time a file within a Phar archive is created or modified in any way, the entire Phar archive will be recreated with the changes. In this way, the archive will be up-to-date with the activity performed on it.

However, this can be unnecessary when simply creating a new Phar archive, when it would make more sense to write the entire archive out at once. Similarly, it is often necessary to make a series of changes and to ensure that they all are possible before making any changes on disk, similar to the relational database concept of transactions. the Phar::startBuffering()/Phar::stopBuffering() pair of methods is provided for this purpose.

Phar write buffering is per-archive, buffering active for the foo.phar Phar archive does not affect changes to the bar.phar Phar archive.

Return Values

No value is returned.

Examples

Example #1 A Phar::startBuffering() example

<?php
// make sure it doesn't exist
@unlink('brandnewphar.phar');
try {
    
$p = new Phar(dirname(__FILE__) . '/brandnewphar.phar'0'brandnewphar.phar');
} catch (
Exception $e) {
    echo 
'Could not create phar:'$e;
}
echo 
'The new phar has ' $p->count() . " entries\n";
$p->startBuffering();
$p['file.txt'] = 'hi';
$p['file2.txt'] = 'there';
$p['file2.txt']->setCompressedGZ();
$p['file3.txt'] = 'babyface';
$p['file3.txt']->setMetadata(42);
$p->setStub("<?php
function __autoload(
$class)
{
    include 'phar://myphar.phar/' . str_replace('_', '/', 
$class) . '.php';
}
Phar::mapPhar('myphar.phar');
include 'phar://myphar.phar/startup.php';
__HALT_COMPILER();"
);
$p->stopBuffering();
?>

See Also

  • Phar::stopBuffering() - Stop buffering write requests to the Phar archive, and save changes to disk
  • Phar::isBuffering() - Used to determine whether Phar write operations are being buffered, or are flushing directly to disk



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: 470 / 158680929. Delta: 0.08816 с