php教程

ZipArchive::addFromString

(PHP 5 >= 5.2.0, PHP 7, PECL zip >= 1.1.0)

ZipArchive::addFromStringAdd a file to a ZIP archive using its contents

说明

ZipArchive::addFromString ( string $localname , string $contents ) : bool

Add a file to a ZIP archive using its contents.

Note: For maximum portability, it is recommended to always use forward slashes (/) as directory separator in ZIP filenames.

参数

localname

The name of the entry to create.

contents

The contents to use to create the entry. It is used in a binary safe mode.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

范例

Example #1 Add an entry to a new archive

<?php
$zip 
= new ZipArchive;
$res $zip->open('test.zip'ZipArchive::CREATE);
if (
$res === TRUE) {
    
$zip->addFromString('test.txt''file content goes here');
    
$zip->close();
    echo 
'ok';
} else {
    echo 
'failed';
}
?>

Example #2 Add file to a directory inside an archive

<?php
$zip 
= new ZipArchive;
if (
$zip->open('test.zip') === TRUE) {
    
$zip->addFromString('dir/test.txt''file content goes here');
    
$zip->close();
    echo 
'ok';
} else {
    echo 
'failed';
}
?>

User Contributed Notes

tahazit dot co dot il at gmail dot com 28-Nov-2014 01:18
On PHP >5.4, This function will usually create any subfolders inside the ZIP archive.
For instance:

   $zip->addFromString ( 'path/to/file.txt' , $data );

will create the folders "path/", and "path/to/" in addition to placing the newly created file "file.txt" in "path/to/" folder.
xslidian at lidian dot info 20-Feb-2013 12:57
Although numFiles will change after overwriting a file, it will be back normal when you ZipArchive::close() and open() it again.
NULL indexes don't persist either. Only the new order is kept. So feel free to overwrite.

Here overwriting works the same as deleting and adding. So it's not necessary to ZipArchive::deleteName() first.
calebcjh 19-May-2010 12:54
Although this function displaces files of the same name, in actual fact, the original file is blanked and a new entry is added. The numFiles property is incremented.

Example:

File 1: foo
File 2: bar

$zip->addFromString('foo', 'new foo');

File 1:
File 2: bar
File 3: foo
gbti at ukr dot net 16-Nov-2008 10:01
if you try:

<?php
$zip
->open("file", ZipArchive::CREATE);
$zip->addFromString("russian_letters/options.xml");
?>

wrong directory will be created.

if you try:

<?php
$zip
->addEmptyDir("russian_letters");
?>

All be fine.
Jacques Chester 30-Jan-2007 09:10
Note that this function overwrites existing files of the same name.

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