PHP substr() function is not working as expected

Question

I am removing the first character of the string and I am using substr(); function for that.
For example :

<?php
$amount =  '€300';
echo substr($amount ,1);
?>

This code is doing its work fine but it have some bug. When I display the substr() function applied string then it display something other symbol at the beginning of the string. Below image has output.

In above image you can see its displaying unwanted symbol. But when I apply substr() function again it works successfull.
I just want to know why this function having that symbol? what does this symbol mean? Why its coming in the output?

This probably is an issue with your php setup, your configuration. This looks as if you are trying to apply the 8 bit function to a utf encoded string which certainly will not work.Please read about unicode support in php and about the mbstring extension and "function overloading"`. — arkascha
– arkascha, Commented Oct 3, 2015 at 8:59
The problem seem to happen with the € symbol but not with $ — Pedro Lobito
– Pedro Lobito, Commented Oct 3, 2015 at 9:00
This happens when you strip a byte of a multibyte character. You should use multibyte-aware string functions (mb_*) for multibyte-encoded strings (e. g. UTF-8). stackoverflow.com/questions/9087502/… — Quasdunk
– Quasdunk, Commented Oct 3, 2015 at 9:15

Nabi · Accepted Answer · 2015-10-03 13:47:54Z

2

you could using mb_substr() php function http://php.net/manual/en/function.mb-substr.php

<?php
$amount =  '€300';
echo mb_substr($amount, 1, NULL, "UTF-8");
?>

edited Oct 3, 2015 at 13:47

answered Oct 3, 2015 at 9:13

Nabi

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Pedro Lobito · Accepted Answer · 2015-10-03 09:11:22Z

1

I managed to solve the problem by using utf8_decode, i.e.:

$amount =  utf8_decode('€300');
echo substr($amount ,1);
//300

edited Oct 3, 2015 at 9:11

answered Oct 3, 2015 at 9:03

Pedro Lobito

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