How to convert string to symbol in PHP

php

Solution

$output_password = str_repeat ('*', strlen ($input_password));

Problem

How to convert a password string to specified symbol like `*` or something else. I'm currently working on change password page. I would like to display the password to page, and i want to avoid the password overlook by someone, so i want to covert the password's string to symbol like `*` with same lengths. An example like `<input type="password" />`. Sorry for my bad english...

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