缓存文件,大家用的最多的估计就是 return array();
实验证明,这种方法是较慢的,试考查以下的3个文件.
其一. $arr.php 直接返回 数组
<?php return Array ( "db_host1" => 123, "db_host2" => 123, "db_host3" => 123, "db_host4" => 123, "db_host5" => 123, "db_host6" => 123, "db_host7" => 123, "db_host8" => 123, "db_host9" => 123, "db_host10" => 123, "db_host11" => 123, "db_host12" => 123, "db_host13" => 123, "db_host14" => 123, "db_host15" => 123, "db_host16" => 123 ); ?>
其二, ini.php 为INI文件
<?php exit;?> db_host1 =123 db_host2 =123 db_host3 =123 db_host4 =123 db_host5 =123 db_host6 =123 db_host7 =123 db_host8 =123 db_host9 =123 db_host10 =123 db_host11 =123 db_host12 =123 db_host13 =123 db_host14 =123 db_host15 =123 db_host16 =123 其三,str.php 为序例化后的数组
<?php return ''a:16:{s:8:"db_host1";s:3:"123";s:8:"db_host2";s:3:"123";s:8:"db_host3";s:3:"123";s:8:"db_host4";s:3:"123";s:8:"db_host5";s:3:"123";s:8:"db_host6";s:3:"123";s:8:"db_host7";s:3:"123";s:8:"db_host8";s:3:"123";s:8:"db_host9";s:3:"123";s:9:"db_host10";s:3:"123";s:9:"db_host11";s:3:"123";s:9:"db_host12";s:3:"123";s:9:"db_host13";s:3:"123";s:9:"db_host14";s:3:"123";s:9:"db_host15";s:3:"123";s:9:"db_host16";s:3:"123";}''; ?>
分别对3个文件 进行10000次包含返回数组测试
$t1 = microtime(true);
$file1 = ''./arr.php''; $file2 = ''./ini.php''; $file3 = ''./str.php'';
for($i=0; $i<10000; $i++){ //$arr = require $file1; //$arr = parse_ini_file($file2); $arr = unserialize(require $file3); }
$t2 = microtime(true); echo $t2-$t1;
得出结果:
arr.php 5.7820551395416
ini.php 5.3364160060883
str.php 5.5691919326782
其中,排得最快的居然是 INI文件.
其次是序列化, 最慢的是直接 return 数组
结论:
ini 文件不错,方便书写(可以考虑)
保存数组, 用序列化!
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