57 lines
1.2 KiB
PHP
57 lines
1.2 KiB
PHP
<?php
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class Cache
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{
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public static function store( $key, $data, $ttl = 86400, $subdir = '' )
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{
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if ( defined( 'SP_CACHE' ) and constant( "SP_CACHE" ) == false ) {
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return false;
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}
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file_put_contents( self::get_file_name( $key, $subdir ), base64_encode( serialize( array( time() + $ttl, $data ) ) ) );
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}
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private static function get_file_name( $key, $subdir )
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{
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$md5 = md5( $key );
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if ( $subdir )
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$dir = 'temp/' . $subdir . '/' . $md5[0] . '/';
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else
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$dir = 'temp/' . $md5[0] . '/';
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if ( !is_dir( $dir ) )
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mkdir( $dir , 0755 , true );
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return $dir . 's_cache_' . $md5;
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}
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static public function fetch( $key, $subdir = '' )
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{
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global $config;
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if ( !$config['cache'] )
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return false;
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$filename = self::get_file_name( $key );
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if ( !file_exists( $filename ) || !is_readable( $filename ) )
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return false;
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$data = base64_decode( file_get_contents( $filename ) );
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$data = @unserialize( $data );
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if ( !$data )
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{
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unlink( $filename );
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return false;
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}
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if ( time() > $data[0] )
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{
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if ( file_exists( $filename ) )
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unlink( $filename );
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return false;
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}
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return $data[1];
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}
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}
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?>
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