array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.memory-get-usage.php', 1 => 'memory_get_usage', ), 'up' => array ( 0 => 'ref.info.php', 1 => 'PHP 选项/信息 函数', ), 'prev' => array ( 0 => 'function.memory-get-peak-usage.php', 1 => 'memory_get_peak_usage', ), 'next' => array ( 0 => 'function.memory-reset-peak-usage.php', 1 => 'memory_reset_peak_usage', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'reference/info/functions/memory-get-usage.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)
memory_get_usage — 返回分配给 PHP 的内存量
注意:
PHP 不跟踪非
emalloc()
分配的内存
返回内存量字节数。
示例 #1 一个 memory_get_usage() 示例
<?php
//这只是个示例,下面的数字取决于你的系统
echo memory_get_usage() . "\n"; // 36640
$a = str_repeat("Hello", 4242);
echo memory_get_usage() . "\n"; // 57960
unset($a);
echo memory_get_usage() . "\n"; // 36744
?>