php dump 当前所有局部变量

虽然有xdebug，平时还是用log或是var_dump调试的时候居多。

经常想知道执行某个点时当前的变量情况，今天回来找了下参考php官网上 kailashbadu 的代码写了一个。

核心在于 get_defined_vars() 函数。另外也有取出所有常量的get_defined_constants() 函数。

/**
 * @desc show the variable that are to be excluded from the list.
 * $varList    array
 * $excludeList    array
 */
function logVars($varList, $excludeList = null) {
    if ($excludeList == null)
        $excludeList = array('GLOBALS', '_FILES', '_COOKIE', '_POST', '_GET');

    $list = array();
    foreach ($varList as $key => $value) {
        if (!in_array($key, $excludeList))
            $list[$key] = $value;
    }

    echo '<pre>';
    print_r($list);
    echo '</pre>';
}

//some dummy variables; add your own or include a file.
$firstName = 'kailash';
$lastName = 'Badu';
$test = array('Pratistha', 'sanu', 'fuchhi');


logVars(get_defined_vars());

// results
/*
Array
(
    [firstName] => kailash
    [lastName] => Badu
    [test] => Array
        (
            [0] => Pratistha
            [1] => sanu
            [2] => fuchhi
        )
)
*/

参考: http://cn.php.net/manual/en/function.get-defined-vars.php