php下把数组保存为文件格式的实例应用_PHP教程

$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)));

//写入
function cache_write($name, $var, $values) {
$cachefile = S_ROOT.'./data/data_'.$name.'.php';
$cachetext = ""if(!defined('CHECK_CODE')) exit('Access Denied'); ".
'$'.$var.'='.arrayeval($values).
" ?>";
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 $space .= " ";
}
$evaluate = "Array $space( ";
$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 = ", $space";
}
$evaluate .= " $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;
}
}

cache_write('file', 'arrayName', $array);

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