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WordPress Fragment Caching convenience wrapper
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<?php | |
/* | |
Usage: | |
$frag = new CWS_Fragment_Cache( 'unique-key', 3600 ); // Second param is TTL | |
if ( !$frag->output() ) { // NOTE, testing for a return of false | |
functions_that_do_stuff_live(); | |
these_should_echo(); | |
// IMPORTANT | |
$frag->store(); | |
// YOU CANNOT FORGET THIS. If you do, the site will break. | |
} | |
*/ | |
class CWS_Fragment_Cache { | |
const GROUP = 'cws-fragments'; | |
var $key; | |
var $ttl; | |
public function __construct( $key, $ttl ) { | |
$this->key = $key; | |
$this->ttl = $ttl; | |
} | |
public function output() { | |
$output = wp_cache_get( $this->key, self::GROUP ); | |
if ( !empty( $output ) ) { | |
// It was in the cache | |
echo $output; | |
return true; | |
} else { | |
ob_start(); | |
return false; | |
} | |
} | |
public function store() { | |
$output = ob_get_flush(); // Flushes the buffers | |
wp_cache_add( $this->key, $output, self::GROUP, $this->ttl ); | |
} | |
} |
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