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<?php $cal = $_REQUEST["cal"]; $lad = $_REQUEST["lad"]; switch($cal) { case "area": $area = $lad * $lad; echo "El del rectángulo e ingresado es: $area"; break; case "peri": $peri = $lad * 4; echo "Su perímetro es de: $peri"; break; default: echo "Debe seleccionar una opción"; break; } ?>
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key "cal" in /in/4ZIPU on line 2 Warning: Undefined array key "lad" in /in/4ZIPU on line 3 Debe seleccionar una opción

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