get_defined_vars 即将(引用):
返回一个多维数组,其中包含所有已定义变量的列表,无论是环境,服务器还是用户定义的变量
好吧,对于我的调试任务,我只需要那些用户定义的。是否内置了php或补充功能?
编辑: 好吧,我没有弄清楚我到底发生了什么,这里有一些例子:
<?php
/*
this script is included, and I don't have info
about how many scripts are 'above' and 'bellow' this*/
//I'm at line 133
$user_defined_vars = get_user_defined_vars();
//$user_defined_vars should now be array of names of user-defined variables
//what is the definition of get_user_defined_vars()?
?>
答案 0 :(得分:14)
是的,你可以:
<?php
// Start
$a = count(get_defined_vars());
/* Your script goes here */
$b = 1;
// End
$c = get_defined_vars();
var_dump(array_slice($c, $a + 1));
将返回:
array(1) {
["b"]=>
int(1)
}
答案 1 :(得分:9)
小数组操作怎么样?
$testVar = 'foo';
// list of keys to ignore (including the name of this variable)
$ignore = array('GLOBALS', '_FILES', '_COOKIE', '_POST', '_GET', '_SERVER', '_ENV', 'ignore');
// diff the ignore list as keys after merging any missing ones with the defined list
$vars = array_diff_key(get_defined_vars() + array_flip($ignore), array_flip($ignore));
// should be left with the user defined var(s) (in this case $testVar)
var_dump($vars);
// Result:
array(1) {
["testVar"]=>string(3) "foo"
}
答案 2 :(得分:0)
This似乎是解决问题的一个很酷的解决方案:
<?php
// Var: String
$var_string = 'A string';
// Var: Integer
$var_int = 55;
// Var: Boolean
$var_boolean = (int)false;
/**
* GetUserDefinedVariables()
* Return all the user defined variables
* @param array $variables (Defined variables)
* @return array $user_variables
*/
function GetUserDefinedVariables($variables){;
if (!is_array($variables))
return false;
$user_variables = array();
foreach ($variables as $key => $value)
if (!@preg_match('@(^_|^GLOBALS)@', $key))
$user_variables[$key] = $value;
return $user_variables;
}
echo '<pre>'.print_r(
GetUserDefinedVariables(
get_defined_vars()
), true).'</pre>';
?>