<?php
// INF is a value in the answer of a tag's PHP as it is in {echo} and a field
// (a_tag_answering_inf_prints_it_as_the_field_does): the call that runs the PHP turned INF
// into NULL and the level took it for no answer, so an application tag, an {at} over a
// value INF and a pipe function answering INF printed nothing - where a tag answering -INF
// printed -INF.
$s = [ 'm' => INF, 'n' => 1 ];
?>
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[{infanswer}][{infanswer | upper}][{app:infanswer}][{at 's.m'}][{at 's.m' | upper}][{at 's.n'}][{echo 1 | infpipe}]
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