phar
PHP Manual

Phar::canCompress

(PECL phar:1.0.0-1.2.1)

Phar::canCompress — Returns whether phar extension supports compression using either zlib or bzip2

说明

bool Phar::canCompress ([ int $type ] )

This should be used to test whether compression is possible prior to loading a phar archive containing compressed files.

参数

type

Either Phar::GZ or Phar::BZ2 can be used to test whether compression is possible with a specific compression algorithm (zlib or bzip2).

返回值

TRUE if compression/decompression is available, FALSE if not.

范例

Example#1 A Phar::canCompress() example

<?php
if (Phar::canCompress()) {
    echo 
file_get_contents('phar://compressedphar.phar/internal/file.txt');
} else {
    echo 
'no compression available';
}
?>

参见


phar
PHP Manual