经测试代码如下：
/**
* 通过array_walk调试数组
*
* @param
* @arrange (512.笔记) jb51.cc
**/
function debug_val($val,$key='',$depth=0) {
if (is_array($val)){
// call this function again with the "sub-array":
array_walk($val,'debug_val',$depth+5);
}
else {
// if we hit a string or bool,etc. then print it:
print str_repeat(' ',$depth);
print '<span style="color: blue;">' . $key . '</span>: ';
print var_export($val,true);
print "<br/>\n";
}
}
/*example-start*/
// setup the test array
$array = array(
'PHP','cool',array('foo',1,2,3,array('mixed' => 'bar')),'PHP' => 'array','yes' => true,'no' => false
);
// debug the array
debug_val($array);
/*example-end*/
/*** 代码来自编程之家 jb51.cc（jb51.cc） ***/