Complete required steps:

$1.$ Write a PHP script that uses a 'for' loop to print the numbers $1$ to $10$ on separate lines.

$2.$ Write a PHP script that uses a 'while' loop to print the first $10$ even numbers on separate lines.

$3.$ Write a PHP script that asks the user to enter their age. If the age is less than $18,$ display the message "You are a minor." If the age is between $18$ and $64,$ display the message "You are an adult." If the age is $65$ or older, display the message "You are a senior citizen."

$4.$ Write a PHP script that uses nested $\text{'}$if$\text{'}$ statements to determine whether a number is positive, negative, or zero. If the number is greater than $0,$ display the message "The number is positive." If the number is less than $0,$ display the message "The number is negative." If the number is equal to $0,$ display the message "The number is zero."

$5.$ Write a PHP script that uses a 'for' loop and a nested $\text{'}$if$\text{'}$ statement to print the multiplication table for the numbers $1$ to $10.$ The output should look something like this:

$12345678910$

$2468101214161820$

$36912151821242730$

$481216202428323640$

$5101520253035404550$

$6121824303642485460$

$7142128354249566370$

$8162432404856647280$

$9182736455463728190$

$102030405060708090100$