how to know if a $string ends with ','?

Question

Possible Duplicate:
Find last character in a string in PHP

How can I know if the last char of a $string is ',' ?

Possible Duplicate of [find last character in a string in php](http://stackoverflow.com/questions/4427172/find-last-character-in-a-string-in-php). Won't tell you if the string starts with a comma, but I take you know how to use an `if`. — Gordon, Jan 21 '11 at 23:22
[PHP Manual: string functions](http://php.net/manual/en/ref.strings.php) — Pekka, Jan 21 '11 at 23:22
While not an answer, probably the most common reason someone would ask this question is that they want to know if there is a comma they should remove; or perhaps whether they should add or a comma, or one already exists. For these cases, something like `$string = rtrim($string, ',')` is probably the simplest path: you don't NEED to know whether there's something on the end, then. — Dewi Morgan, Mar 30 '18 at 15:59
PHP 8.0 introduces new method for this job `str_end_with`: https://stackoverflow.com/a/64160081/7082164 — Jsowa, Oct 01 '20 at 17:05

ircmaxell · Accepted Answer · 2014-09-08T13:36:32.003

125

There are a few options:

if (substr($string, -1) == ',') {

Or (slightly less readable):

if ($string[strlen($string) - 1] == ',') {

Or (even less readable):

if (strrpos($string, ',') == strlen($string) - 1) {

Or (even worse yet):

if (preg_match('/,$/', $string)) {

Or (wow this is bad):

if (end(explode(',', $string)) == '') {

The take away, is just use substr($string, -1) and be done with it. But there are many other alternatives out there...

edited Sep 08 '14 at 13:36

answered Jan 21 '11 at 23:25

ircmaxell

163,128
34
264
314

4

I don't think your second last one is that bad at all... – Dara Java Oct 17 '13 at 09:26
8

I know it's subjective, but I find the preg_match one to be the most readable – mastazi Sep 21 '15 at 00:23
5

From PHP 7.1 you can use `if ($string[-1] == ',')`. It's clear and faster than using substr(). – Nick Rice Jan 21 '18 at 11:35
how to match like with dot in the end /.$/ – fahdshaykh Oct 05 '21 at 07:58

score 12 · Answer 2 · answered Jan 21 '11 at 23:22

12

$string = 'foo,bar,';
if(substr($string, -1) === ','){
    // it ends with ','
}

answered Jan 21 '11 at 23:22

Floern

33,559
24
104
119

score 6 · Answer 3 · answered Jan 21 '11 at 23:27

6

You can use regular expressions for this in PHP:

if (preg_match("/,$/", $string)) {
    #DO THIS
} else {
    #DO THAT
}

This says to check for a match of a comma at the end of the $string.

answered Jan 21 '11 at 23:27

Steve Dickinson

148
6

how to match like with dot in the end /.$/ – fahdshaykh Oct 05 '21 at 07:58

score 4 · Answer 4 · answered Jan 21 '11 at 23:22

4

if (substr($str, -1) === ',') 
{
 echo 'it is';
}

answered Jan 21 '11 at 23:22

GolezTrol

114,394
18
182
210

score 3 · Answer 5 · answered Jan 21 '11 at 23:25

3

For the micro optimizers:

$string[strlen($string)-1] == ","

answered Jan 21 '11 at 23:25

mario

144,265
20
237
291

1

will trigger a notice when `$string = ''` though. downvote wasnt me. – Gordon Jan 21 '11 at 23:28
@Gordon which is quite helpful actually (depending on use case, of course) – mario Jan 21 '11 at 23:31

score 2 · Answer 6 · edited May 23 '17 at 12:10

2

See the endsWith function here:

startsWith() and endsWith() functions in PHP

edited May 23 '17 at 12:10

Community

1
1

answered Jan 21 '11 at 23:21

Michael Berry

70,193
21
157
216

2

should have been a comment or a CW because we do not get reputation for finding duplicates. – Gordon Jan 21 '11 at 23:23
3

Now turned into a CW :-) – Michael Berry Jan 21 '11 at 23:24
there is another function for helping is str_ends_with($string, ',') https://www.php.net/manual/en/function.str-ends-with.php – fahdshaykh Oct 05 '21 at 07:52

score 2 · Answer 7 · answered Jan 21 '11 at 23:23

2

//$str hold your string
if(substr($str, -1) ==',')
{
   return true
}

answered Jan 21 '11 at 23:23

slier

6,511
6
36
55

how to know if a $string ends with ','?

7 Answers7

Linked