从字符串中删除最后一个字符 [英] Remove last character from a string

问题描述

我有一个国家列表作为数组..我希望此数组采用以下格式，以便以后通过ajax返回:-

I have a list of country as an array .. i want this array in following format to later return it via ajax :-

印度"，美国"，英国" ..

"india","usa","uk" ..

使用下面的代码来获得我正在寻找的..

Used following code to get somewhat i was looking for ..

foreach($country_list as $country) {
   $countries .= '"'.$country['label'].'",';
}

问题是它给出的输出是"india"，"usa"，"uk"，...，即尾随逗号.

problem is it is giving output like "india","usa","uk", ... i.e with trailing comma .

试图用

substr_replace($countries, "0", -1);

和

rtrim($countries, ",");

但是没用！ ..请帮忙！

But didnt work ! .. Please help !

推荐答案

我认为您不希望在修剪后将变量分配回去:

I think that you're missing to assign the variable back after the trim:

$s = '"india","usa","uk",';
$s = rtrim($s, ',');
// prints "india","usa","uk"
print $s;

演示

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