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

正如其他人所说，您可以使用Firebug，这将使您不必担心Firefox。Chrome和Safari都有一个内置的开发控制台，它与Firebug的控制台有着几乎相同的界面，所以你的代码应该可以在这些浏览器之间移植。对于其他浏览器，有Firebug Lite。

如果Firebug不适合你，那么试试这个简单的脚本:

function dump(obj) {
    var out = '';
    for (var i in obj) {
        out += i + ": " + obj[i] + "\n";
    }

    alert(out);

    // or, if you wanted to avoid alerts...

    var pre = document.createElement('pre');
    pre.innerHTML = out;
    document.body.appendChild(pre)
}

我建议不要提醒每个单独的属性:有些对象有很多属性，你会在那里点击“OK”，“OK”，“OK”，“O…该死，这就是我要找的东西。”

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

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

如果使用Firebug，可以使用console.log输出一个对象，并在控制台中获得一个超链接的可浏览项。

下面是我最喜欢的var_dump/print_r等效Javascript php var_dump。

function dump(arr,level) {
    var dumped_text = "";
    if(!level) level = 0;
    
    //The padding given at the beginning of the line.
    var level_padding = "";
    for(var j=0;j<level+1;j++) level_padding += "    ";
    
    if(typeof(arr) == 'object') { //Array/Hashes/Objects 
        for(var item in arr) {
        var value = arr[item];
            if(typeof(value) == 'object') { //If it is an array,
                dumped_text += level_padding + "'" + item + "' ...\n";
                dumped_text += dump(value,level+1);
            } else {
                dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
            }
        }
    } else { //Stings/Chars/Numbers etc.
        dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
    }
    return dumped_text;
}