How to replace last comma in string with "and" using php?

Question

I'm trying to replace the last occurence of a comma in a text with "and" using strrchr() and str_replace().

Example:

$likes = 'Apple, Samsung, Microsoft';
$likes = str_replace(strrchr($likes, ','), ' and ', $likes);

But this replaces the entire last word (Microsoft in this case) including the last comma in this string. How can I just remove the last comma and replace it with " and " ?

I need to solve this using strrchr() as a function. That's why this question is no duplicate and more specific.

Possible duplicate of [PHP Replace Last Occurence of a String in a String?](http://stackoverflow.com/a/3835653/5447994) — Thamilhan, Jan 20 '17 at 11:47
@Thamilhan You should actually read the question first before reporting everything as duplicate... — AlexioVay, Apr 02 '23 at 17:57

score 13 · Accepted Answer · answered Jan 20 '17 at 12:17

13

To replace only the last occurrence, I think the better way is:

$likes = 'Apple, Samsung, Microsoft';
$likes = substr_replace($likes, ' and', strrpos($likes, ','), 1);

strrpos finds the position of last comma, and substr_replace puts the desired string in that place replacing '1' characters in this case.

answered Jan 20 '17 at 12:17

Masteruniversal

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If $likes='Apple' , this function returns ' andpple' – Alberto Suárez May 09 '23 at 22:22

score 5 · Answer 2 · answered Jan 20 '17 at 11:56

5

You can use regex to find last comma in string. Php preg_replace() replace string with another string by regex pattern.

$likes = 'Apple, Samsung, Microsoft';
$likes = preg_replace("/,([^,]+)$/", " and $1", $likes)

Check result in demo

answered Jan 20 '17 at 11:56

Mohammad

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you can also do `preg_replace('/,(?=[^,]*$)/',' and', $likes);` – But those new buttons though.. Aug 11 '20 at 16:00

score 4 · Answer 3 · answered Jan 08 '19 at 22:00

just provide the answer with function strrchr()

$likes = 'Apple, Samsung, Microsoft';
$portion = strrchr($likes, ',');
$likes = str_replace($portion, (" and" . substr($portion, 1, -1)), $likes);

because strrchr() will

This function returns the portion of string

See Doc here

so we just need only replace the comma symbol should be fine. and the comma will be always the first character when you use strrchr()

See Demo here

score 1 · Answer 4 · answered Jan 20 '17 at 11:47

1

first, you gotta separate the elements into an array with all but the last one, and the last one. then you put them back together with commas and an "and", respectively

$likes = "A, B, C";
$likes_arr = explode(",", $likes);
$last = array_pop($likes_arr);
$likes = implode(",", $likes_arr) . " and" . $last;
echo $likes; //"A, B and C";

however: don't forget to check if you actually have enough elements. this fails for inputs without comma.

answered Jan 20 '17 at 11:47

Franz Gleichmann

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Warning: array_pop() expects parameter 1 to be array – jitendrapurohit Jan 20 '17 at 11:50
We can use if($last) { $likes = implode(",", $likes_arr) . " and" . $last; echo $likes; //"A, B and C"; } for fails of input without comma – Rajesh Baskaran Jan 20 '17 at 11:57
1

@RajeshBaskaran no. not in that way, because for the input "A", $likes_arr becomes ["A"], so $last will be "A" which evaluates to true. – Franz Gleichmann Jan 20 '17 at 12:02

How to replace last comma in string with "and" using php?

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