Standard input is empty

Array
(
    [0] => Array
        (
            [0] => {{if^^p1^p2}} IN1; {{if^ ^p1}} {{iif}} IN3 {{/if}} IN1-1 {{/if}}
            [1] => {{if^ ^p1}} IN1; {{if^ ^p1}} {{if^ ^p1}} IN3 {{/if}} {{/if}} IN1-1 {{/if}}
            [2] => {{if^ ^p1}} IN1; {{if^ ^p1}} {{if^ ^p1}} IN3 {{/if}} {{/if}} IN1-1 {{if^ ^p1}} IN4 {{/if}} {{/if}}
        )

    [1] => Array
        (
            [0] => if
            [1] => if
            [2] => if
        )

    [2] => Array
        (
            [0] => 
            [1] =>  
            [2] =>  
        )

    [3] => Array
        (
            [0] => p1^p2
            [1] => p1
            [2] => p1
        )

    [4] => Array
        (
            [0] =>  IN1; {{if^ ^p1}} {{iif}} IN3 {{/if}} IN1-1 
            [1] =>  IN1; {{if^ ^p1}} {{if^ ^p1}} IN3 {{/if}} {{/if}} IN1-1 
            [2] =>  IN1; {{if^ ^p1}} {{if^ ^p1}} IN3 {{/if}} {{/if}} IN1-1 {{if^ ^p1}} IN4 {{/if}} 
        )

)