php下把数组保存为文件格式的实例应用

$file="./cache/file.cache"; 
$array = array("color" => array("blue", "red", "green"), 
"size" => array("small", "medium", "large")); 
//缓存 
file_put_contents($file,serialize($array));//写入缓存 
//读出缓存 
$handle = fopen($file, "r"); 
$cacheArray = unserialize(fread($handle, filesize ($file))); 
 
第二种方法： 
比较复杂，先贴几个函数： 
 代码如下:

//写入 
function cache_write($name, $var, $values) { 
$cachefile = S_ROOT.'./data/data_'.$name.'.php'; 
$cachetext = "<?php\r\n". 
"if(!defined('CHECK_CODE')) exit('Access Denied');\r\n". 
'$'.$var.'='.arrayeval($values). 
"\r\n?>"; 
if(!swritefile($cachefile, $cachetext)) { 
exit("File: $cachefile write error."); 
} 
} 
//数组转换成字串 
function arrayeval($array, $level = 0) { 
$space = ''; 
for($i = 0; $i <= $level; $i++) { 
$space .= "\t"; 
} 
$evaluate = "Array\n$space(\n"; 
$comma = $space; 
foreach($array as $key => $val) { 
$key = is_string($key) ? '\''.addcslashes($key, '\'\\').'\'' : $key; 
$val = !is_array($val) && (!preg_match("/^\-?\d+$/", $val) || strlen($val) > 12) ? '\''.addcslashes($val, '\'\\').'\'' : $val; 
if(is_array($val)) { 
$evaluate .= "$comma$key => ".arrayeval($val, $level + 1); 
} else { 
$evaluate .= "$comma$key => $val"; 
} 
$comma = ",\n$space"; 
} 
$evaluate .= "\n$space)"; 
return $evaluate; 
} 
//写入文件 
function swritefile($filename, $writetext, $openmod='w') { 
if(@$fp = fopen($filename, $openmod)) { 
flock($fp, 2); 
fwrite($fp, $writetext); 
fclose($fp); 
return true; 
} else { 
runlog('error', "File: $filename write error."); 
return false; 
} 
} 
 
调用方法很简单： 
PHP代码 
 代码如下:

cache_write('file', 'arrayName', $array); 
 
使用上形同标准的include格式： 
PHP代码 
 代码如下:

@include ('./data/data_cache.php'); 
//数组重新排序 
sort($arrayName);