How to cache PHP variables as a file _php tutorial

How to cache PHP variables as files

The example in this article describes how to cache php variables in file form. Share to everyone for your reference. The implementation method is as follows:

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/* $cache _set = Array ( Cache path, last add "/" ' CacheRoot ' = './cache/', Cache time ' CacheTime ' =>20, Cache type ' CacheType ' =>1, Extended Name ' Cacheexe ' = '. php ' ); $cache = new Cache ($cache _set); $a =array (' 1 ', ' 2 '); $a = "AAA"; $b = "; if ($cache->cache_is ("D")) { $c = $cache->cache_read ("D"); echo "C"; Print_r ($c); }else { $b = $cache->cache_data (' d ', $a); } Print_r ($b); $cache->clear ("a"); echo $cache->cache_read ("./cache/d.php"); Echo $d; */ /** * Data Cache Class v1.0 * @author Shooke * 2009-11-13 16:02:26 * Used to cache data, such as variables, but cannot cache pages */ Class cache{ Configuration Public $config = Array ( Cache path ' CacheRoot ' = './cache/', Cache time ' CacheTime ' =>1, Cache type 1 Serialization data 2 variable ' CacheType ' =>2, Extended Name ' Cacheexe ' = '. php ' Converting intermediate variables ); Public $return _name=array (); function __construct ($cache _set = Array ()) { if (!empty ($cache _set)) $this->config=array_merge ($this->config, $cache _set); $this->config[' ClassName '] = __class__; } Public Function Clear ($filename = ") { if (File_exists ($this->cache_file ($filename))) { @unlink ($this->cache_file ($filename)); }elseif (Empty ($filename)) { $this->clear_dir ($this->config[' cacheroot '); }else{ $this->clear_dir ($this->config[' CacheRoot '). $filename); echo $this->config[' CacheRoot '). $filename; } } Loop Delete Path Private Function Clear_dir ($dir, $to = False) { if ($list = Glob ($dir. '/* ')) { foreach ($list as $file) { Is_dir ($file)? $this->clear_dir ($file): unlink ($file); } } if ($to = = = False) rmdir ($DIR); } Write Cache Private Function Cache_write ($filename, $writetext, $openmod = ' W ') { if (!file_exists ($filename)) { @ $this->makedir (dirname ($filename)); } if (@ $fp = fopen ($filename, $openmod)) { Flock ($FP, 2); Fwrite ($fp, $writetext); Fclose ($FP); return true; } else { echo "File: $filename write error."; return false; } } Cache validity Valid Returns True Public Function cache_is ($fileName) { $fileName = $this->cache_file ($fileName); if (file_exists ($fileName)) { Never expire if the cache time is negative if ($this->config[' cacheTime ') < 0) { return true; } Expires if the cache time is 0 if ($this->config[' cacheTime ') = = 0) { return false; } Get the cache file settling time $ctime = Intval (Filemtime ($fileName)); Whether the comparison is greater than the cache time, is expired or is not valid if (Time ()-$ctime > $this->config[' cacheTime ') { return false; }else { return true; } File does not exist as expired expiration }else { return false; } } Public Function Cache_data ($name, $data) { $varname = $name; $name = $this->cache_file ($name); config[' CacheTime ']==0 that is, do not enable caching is to return data directly if ($this->config[' cacheTime ') <> 0) { if ($this->config[' CacheType ']==1) { $write _data = " ". Serialize ($data); return $data; }else { $write _data = " $write _data. = Var_export ($data, true); $write _data. = ";\\r\\n?>"; } $this->cache_write ($name, $write _data); } return $data; } Cache file Name Private Function Cache_file ($filename) { return $this->config[' CacheRoot '). $filename. $this->config[' Cacheexe '; } Read file Public Function Cache_read ($file) { $file = $this->cache_file ($file); if (!file_exists ($file)) { Return '; } if ($this->config[' CacheType ']==1) { if (function_exists (' file_get_contents ')) { $cache _content= file_get_contents ($file); }else{ $fopen = fopen ($file, ' R '); $cache _content = "; do { $data = Fread ($fopen, FileSize ($file)); if (strlen ($data) ===0) break; $cache _content. = $data; }while (1); Fclose ($fopen); } $cache _content = substr ($cache _content,13);/* Remove */ $cache _content = unserialize ($cache _content); return $cache _content; }else{ Include_once ($file); return $var; } } Looping through the creation of catalogs Private Function MakeDir ($dir, $mode = 0777) { if (! $dir) return 0; $dir = Str_replace ("\\\\", "/", $dir); $mdir = ""; foreach (Explode ("/", $dir) as $val) { $mdir. = $val. " /"; if ($val = = ":" | | $val = = "." | | Trim ($val) = = "") continue; if (! file_exists ($mdir)) { if (! @mkdir ($mdir, $mode)) { return false; } } } return true; } } ?>

I hope this article is helpful to everyone's PHP programming.

http://www.bkjia.com/PHPjc/1022063.html www.bkjia.com true http://www.bkjia.com/PHPjc/1022063.html techarticle how to cache PHP variables as a file The example in this article describes how to cache PHP variables in a file format. Share to everyone for your reference. The specific implementation method is as follows:? 1 2 3 4 5 6 7 ...

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