How to replace the last digit in php string

How to replace the last digit of a php string: First create a PHP sample file; then use the "preg_replace('#.$#i', '0', $image_path);" method to intercept the last digit of the string Just replace one by one.

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PHP intercepts the last digit of the string and replaces it

$image_path = 'http://www.baidu.com/1';
$str = preg_replace('#.$#i', '0', $image_path);

The content to be replaced in the second parameter

Change 1 to 0

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