Converting to a String for preg_replace

[joev]

I am trying to create a string which lists receipt numbers that are separated by a commas. I want to remove the last comma after the last receipt number for display:

 

$receipt = "";
for ($i = 0; $i < 3; $i++){
	$receiptID =  $i;
	$receipt = settype ($receiptID, string) . ", ";
	//strval ($receipt);
}
//$receipt = "325, 326,";
$receipt = preg_replace('/,$/', '', $receipt); //Remove last comma

echo $receipt;

 

If I hard code $receipt between double quotes, my preg_replace works fine. If I build $receipt from the for loop, preg_replace leaves the last comma. The problem, I believe, is because $receipt from the loop is not being evaluated as a string. I have tried setting $receipt to a string with settype(), strval(), and (string) without any luck.

 

What am I missing here?

 

Thanks.

[Caesar]

You're likely making it more complicated than it is. Maybe if you tell us the following we may be able to offer an alternative approach....

 

1. What is it you're trying to do?

2. Can you provide an example of what you want the code to output or produce?

 

[GingerRobot]

If you're just trying to remove the last character from your string, which presumably the last comma would be, use substr(). Easier and more efficient than regular expressions.

[joev]

If you're just trying to remove the last character from your string, which presumably the last comma would be, use substr(). Easier and more efficient than regular expressions.

 

Thanks for pointing me to substr(). substr_replace() does the job.

 

Mahalo