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mirror of https://github.com/mrclay/minify.git synced 2025-08-30 00:59:48 +02:00

Huge docs overhaul for 3.x

This commit is contained in:
Steve Clay
2015-09-28 20:30:46 -04:00
parent 0bc3769802
commit 61ba5a47a5
14 changed files with 315 additions and 477 deletions

View File

@@ -1,11 +1,12 @@
In `groupsConfig.php`, usually you specify source file paths using strings like `/path/to/file.js` or `//js/file1.js` (Minify expands this to `"{$_SERVER['DOCUMENT_ROOT']}/js/file1.js"` ).
Instead of a string, you may substitute a "source object" (an instance of class [Minify\_Source](http://code.google.com/p/minify/source/browse/tags/release_2.1.3/min/lib/Minify/Source.php)). This allows you to customize how minification is applied, and/or pull content from a non-file location (e.g. a URL).
Instead of a string, you may substitute an instance of class `Minify_Source`. This allows you to customize how minification is applied, and/or pull content from a non-file location (e.g. a URL).
### Example: filepath
In the `$spec` array, set the key `filepath` to produce a source based on a file path:
```
```php
$src1 = new Minify_Source(array(
'filepath' => '//js/file1.js',
));
@@ -13,15 +14,16 @@ $src2 = new Minify_Source(array(
'filepath' => '//js/file2.js',
));
return array(
'js' => array($src1, $src2)
);
return [
'js' => [$src1, $src2]
];
```
Note the above is functionally identical to:
```
return array(
'js' => array('//js/file1.js', '//js/file2.js')
);
```php
return [
'js' => ['//js/file1.js', '//js/file2.js'],
];
```
### Example: Specify a different minifier or none at all
@@ -30,26 +32,19 @@ To change minifier, set `minifier` to a [callback](http://php.net/manual/en/lang
**`*`Prepare for `groupsConfig.php` to be executed more than once.** (This is likely if you're using the functions in `/min/utils.php`.) In practice this just means making sure functions are conditionally defined if they don't already exist, etc.
```
if (! function_exists('myMin')) {
function myMin($js) {
require_once 'JSMinPlus.php';
return JSMinPlus::minify($js);
}
}
```php
$src1 = new Minify_Source(array(
'filepath' => '//js/file1.js',
'minifier' => 'myMin',
'minifier' => ['JSMinPlus', 'minify'],
));
$src2 = new Minify_Source(array(
'filepath' => '//js/file2.js',
'minifier' => '', // don't compress
));
```
In the above, `myMin()` is only called when rebuilding the cache. This way `JSMinPlus.php` is only loaded when needed.
In the above, `JSMinPlus.php` is only loaded when the contents of `$src1` is needed.
**`*`Do _not_ use [create\_function](http://php.net/manual/en/function.create-function.php) or anonymous functions for the minifier.** The internal names of these function tend to vary, causing Minify to create lots of [duplicate cache files](http://code.google.com/p/minify/issues/detail?id=138) (and perform poorly).
**`*`Do _not_ use `create_function()` or anonymous functions for the minifier.** The internal names of these function tend to vary, causing endless cache misses, killing performance and filling cache storage up.
## Non-File Sources
@@ -63,24 +58,23 @@ You're not limited to flat js/css files, but without `filepath`, the `$spec` arr
### Example: Content from a URL
Here we want to fetch javascript from a URL. We don't know when it will change, so we use a stepping expression to re-fetch it every midnight:
```
```php
if (! function_exists('src1_fetch')) {
function src1_fetch() {
return file_get_contents('http://example.org/javascript.php');
}
}
$src1 = new Minify_Source(array(
$src1 = new Minify_Source([
'id' => 'source1',
'getContentFunc' => 'src1_fetch',
'contentType' => Minify::TYPE_JS,
'lastModified' => ($_SERVER['REQUEST_TIME'] - $_SERVER['REQUEST_TIME'] % 86400),
));
]);
```
If you know that the URL content only depends on a few local files, you can use the maximum of their `mtime`s as the `lastModified` key:
```
...
$src1 = new Minify_Source(array(
```php
$src1 = new Minify_Source([
'id' => 'source1',
'getContentFunc' => 'src1_fetch',
'contentType' => Minify::TYPE_JS,
@@ -88,51 +82,55 @@ $src1 = new Minify_Source(array(
filemtime('/path/to/javascript.php')
,filemtime('/path/to/javascript_input.css')
),
));
]);
```
## Performance Considerations
Be aware that all the code you put in groupsConfig.php will be evaluated upon every request like `/min/g=...`, so make it as light as possible.
Be aware that all the code you put in `groupsConfig.php` will be evaluated upon every request like `/min/g=...`, so make it as light as possible.
If you wish to keep groupsConfig.php "clean", you can alternately create a separate PHP script that manually sets up sources, caching, options, and calls Minify::serve().
```
<?php // myServer.php
If you wish to keep `groupsConfig.php` "clean", you can alternately create a separate PHP script that manually sets up sources, caching, options, and calls Minify::serve().
```php
// myServer.php
/**
* This script implements a Minify server for a single set of sources.
* If you don't want '.php' in the URL, use mod_rewrite...
*/
require __DIR__ . '/vendor/autoload.php';
// setup Minify
set_include_path('path/to/min/lib' . PATH_SEPARATOR . get_include_path());
require 'Minify.php';
require 'Minify/Cache/File.php';
Minify::setCache(new Minify_Cache_File()); // guesses a temp directory
$cache = new Minify_Cache_File();
$minify = new Minify($cache);
$env = new Minify_Env();
$sourceFactory = new Minify_Source_Factory($env, [], $cache);
$controller = new Minify_Controller_Files($env, $sourceFactory);
function src1_fetch() {
return file_get_contents('http://example.org/javascript.php');
}
// setup sources
$sources = array();
$sources[] = new Minify_Source(array(
'id' => 'source1'
,'getContentFunc' => 'src1_fetch'
,'contentType' => Minify::TYPE_JS
,'lastModified' => max(
filemtime('/path/to/javascript.php')
,filemtime('/path/to/javascript_input.js')
)
));
$sources = [];
$sources[] = new Minify_Source([
'id' => 'source1',
'getContentFunc' => 'src1_fetch',
'contentType' => Minify::TYPE_JS,
'lastModified' => max(
filemtime('/path/to/javascript.php'),
filemtime('/path/to/javascript_input.js')
),
]);
$sources[] = '//file2.js';
$sources[] = '//file3.js';
// setup serve options
$options = array(
// setup serve and controller options
$options = [
'files' => $sources,
'maxAge' => 86400,
);
];
// handle request
Minify::serve('Files', $options);
```
$minify->serve($controller, $options);
```