How to remove the last character in php

php method to remove the last character: first create a PHP sample file; then enter the content as "rtrim($arr_str, ",")"; finally execute the file and output the removed result.

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php removes the last character

rtrim($arr_str, ",")

Detailed explanation: rtrim() function syntax: string rtrim ( string $str [, string $character_mask ] )

rtrim — delete the blank characters (or other characters) at the end of the string )

Usage experience:

It is simply prepared for this need!

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