How to remove the last comma from a string in php

php method to remove the last comma in a string: use the function rtrim to filter the end of the string, the code is [$trimmed = "\t\tThese are a few words :) .."$str = '13, 3';echo rtrim($str, ',')].

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How to remove the last comma in a string in php:

First explain it separately,

• trim filters both ends of the string,

• rtrim filters the end of the string,=chop()

• ltrim filters the beginning of the string.

To filter the keys in a string, you can only use str_replace.

For example,

PHP code

The code is as follows:

$str = '123,333,234,';
echo rtrim($str, ',');
rtrim实例代码2

The code is as follows:

<?php
$text = "\t\tThese are a few words :) ...  ";
$trimmed = rtrim($text);
// $trimmed = "\t\tThese are a few words :) ..."
$trimmed = rtrim($text, " \t.");
// $trimmed = "\t\tThese are a few words :)"
$clean = rtrim($binary, "\x00..\x1F");
// trim the ASCII control characters at the end of $binary
// (from 0 to 31 inclusive)
?>

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