(PHP 7, PHP 8, PECL zip >= 1.13.0)
ZipArchive::setCompressionIndex — Set the compression method of an entry defined by its index
$index, int $method, int $compflags = 0): boolSet the compression method of an entry defined by its index.
indexIndex of the entry.
method
       The compression method, one of the
       ZipArchive::CM_* constants.
      
compflagsCompression level.
   成功时返回 true, 或者在失败时返回 false。
  
示例 #1 Add files with different compression methods to an archive
<?php
$zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
if ($res === TRUE) {
    $zip->addFromString('foo', 'Some text');
    $zip->addFromString('bar', 'Some other text');
    $zip->setCompressionIndex(0, ZipArchive::CM_STORE);
    $zip->setCompressionIndex(1, ZipArchive::CM_DEFLATE);
    $zip->close();
    echo 'ok';
} else {
    echo 'failed';
}
?>
