检查PHP数组占用的内存量

有没有简单的方法来检查某个数组占用多少内存

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就像我有大约10k行数组，需要知道服务器在一些

$arr

中记住它需要多少MB/KB，您可以查看以下函数：

您可以查看以下函数：

// how much memory are you using before building your array
$baseMemory = memory_get_usage(false);
// create your array
$a = array('A',1,'B',2);
// how much memory are you using now the array is built
$finalMemory = memory_get_usage(false);
// the difference is a pretty close approximation
$arrayMemory = $finalMemory - $baseMemory;