你可以将此用于字符串和对象/数组

function print_r(obj){
   return JSON.stringify(obj, null, "\t"); 
}

可以使用console.debug(object)来实现这一点再简单不过了。如果你以此为生，这个技巧将为你每年节省数百个小时

虽然有点晚了，但这里有一个非常方便的函数，使用起来超级简单，允许您传递任意类型的参数，并将在浏览器控制台窗口中显示对象内容，就像您从JavaScript调用console.log一样——但是从PHP调用的

注意，你也可以使用标签通过传递" tag - yourtag "它将被应用，直到读取另一个标签，例如" tag - yournexttag "

/*
*   Brief:          Print to console.log() from PHP
*   Description:    Print as many strings,arrays, objects, and other data types to console.log from PHP.
*                   To use, just call consoleLog($data1, $data2, ... $dataN) and each dataI will be sent to console.log - note that
*                   you can pass as many data as you want an this will still work.
*
*                   This is very powerful as it shows the entire contents of objects and arrays that can be read inside of the browser console log.
*                   
*                   A tag can be set by passing a string that has the prefix TAG- as one of the arguments. Everytime a string with the TAG- prefix is
*                   detected, the tag is updated. This allows you to pass a tag that is applied to all data until it reaches another tag, which can then
*                   be applied to all data after it.
*
*                   Example:
*                   consoleLog('TAG-FirstTag',$data,$data2,'TAG-SecTag,$data3); 
*                   Result:
*                       FirstTag '...data...'
*                       FirstTag '...data2...'
*                       SecTag   '...data3...' 
*/
function consoleLog(){
    if(func_num_args() == 0){
        return;
    }

    $tag = '';
    for ($i = 0; $i < func_num_args(); $i++) {
        $arg = func_get_arg($i);
        if(!empty($arg)){       
            if(is_string($arg)&& strtolower(substr($arg,0,4)) === 'tag-'){
                $tag = substr($arg,4);
            }else{      
                $arg = json_encode($arg, JSON_HEX_TAG | JSON_HEX_AMP );
                echo "<script>console.log('".$tag." ".$arg."');</script>";
            }       
        }
    }
}

注意:func_num_args()和func_num_args()是php函数，用于读取动态数量的输入参数，并允许该函数从一个函数调用中有无限多个console.log请求

很多现代浏览器都支持以下语法:

JSON.stringify(myVar);

如果您使用的是firefox，那么firebug插件控制台是检查对象的绝佳方法

console.debug(myObject);

或者你可以像这样循环遍历属性(包括方法):

for (property in object) {
    // do what you want with property, object[property].value
}

你可以简单地使用NPM包var_dump

npm install var_dump --save-dev

用法:

const var_dump = require('var_dump')

var variable = {
  'data': {
    'users': {
      'id': 12,
      'friends': [{
        'id': 1,
        'name': 'John Doe'
      }]
    }
  }
}

// print the variable using var_dump
var_dump(variable)

这将打印:

object(1) {
    ["data"] => object(1) {
        ["users"] => object(2) {
            ["id"] => number(12)
            ["friends"] => array(1) {
                [0] => object(2) {
                    ["id"] => number(1)
                    ["name"] => string(8) "John Doe"
                }
            }
        }
    }
}

链接:https://www.npmjs.com/package/@smartankur4u / vardump

以后谢谢我!