打印使用一个Foreach循环多维数组只 [英] Printing a multi dimensional array using one Foreach loop only

问题描述

最近，我一直在考虑接受记者采访时，许多问题都问了，但有一个问题我不能回答这是以下内容：

Recently I've been given an interview where many question were ask, but there was one question I could not answer which was the following:

打印使用一个的foreach 循环多维数组只。

Printing a multi dimensional array using one foreach loop only.

$cars = array (  
    array("Volvo",22,18), 
    array("BMW",15,13),
    array("Saab",5,2),
    array("Land Rover",17,15) 
);

记者问我打印只使用一个的foreach 循环上述阵列。任何人都可以给我答案吗？

Interviewer asked me to print the above array using only one foreach loop. Can anybody give me answer for this?

推荐答案

在这里你去

$cars = array (  array("Volvo",22,18), array("BMW",15,13),array("Saab",5,2), array("Land Rover",17,15) );

foreach($cars as $car) {
    print("Name: ".$car[0]."\n");
    print("Number 1: ".$car[1]."\n");
    print("Number 2: ".$car[2]."\n");
}

显然可以可以作出检查以确定在内部阵列的其它键被设置。不过看来你的数组将始终包含所有的按键。

Obviously could could make checks to see if the other keys in the inner arrays are set. But seems your array will always contains all the keys.

编辑：

$cars = array (  array("Volvo",22,18), array("BMW",15,13),array("Saab",5,2), array("Land Rover",17,15) );

foreach($cars as $car) {
    $count = 0;

    A:
    if(isset($car[$count])) {
        print($car[$count] . "\n");
        $count +=1;
        goto A;
    }
}

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