PHP implode and explode functions [duplicate] - php

Question

This question already has answers here:
implode() string, but also append the glue at the end
(6 answers)
Closed 1 year ago.
I have this sentence:
piece:5,dozen:10
and I need to print it via php like this:
piece:5$,dozen:10$
without editing the line in the editor, I need php to do it automatically. Now I thought to split it like this:
$uom = "piece:5,dozen:10";
$lst1 = explode(',', $uom);
var_dump($lst1);
and it returned like this:
array (size=2)
0 => string 'piece:5' (length=7)
1 => string 'dozen:10' (length=8)
which is ok for now, so I need after each string piece:5$ dozen:10$ and then I did this:
$lst2 = implode('$ ', $lst1);
echo $lst2;
It printed:
piece:5$ dozen:10
I need the $ to be printed also after 10, so it will be like this:
piece:5$ dozen:10$
What is the right way to do this? What did I do wrong? What if the values are dynamically coming from the database?

Answer 1

You can use a combination of explode, array_map and implode like so:
<?php
$uom = 'piece:5,dozen:10';
$add_dollars = array_map(function($e) {
return $e . '$';
}, explode(',', $uom));
echo implode(" ", $add_dollars);

Answer 2

I see few explode-implode answers. I don't want to duplicate answer, so let me do it another way – with regex.
$data = "piece:5,dozen:10";
echo preg_replace("/(\d+)/i", "$1\$", $data);
It may be a good idea to make it a bit more complex, i.e. take not only \d+, but also previous string and colon. Rather without(!) comma. In my opinion this may be better (because it's usually worth to be strict in regex):
$data = "piece:5,dozen:10";
echo preg_replace("/([a-zA-Z]:\d+)/i", "$1\$", $data);
I encourage you to read php manual: preg_replace.
Answering also the question about jQuery – you don't need to use jQuery, you can do that in pure javascript. And it will be really similar! For example:
let data = "piece:5,dozen:10";
let modified = data.replace(/([a-zAZ]:\d+)/g,"$1\$");
console.log(modified);