Módulo de sitio

Validación de cadena de estado

<?php  

$apc = 'I---xxxx11';
 
$patron =  "/^([a-zA-Z])(-|[a-zA-Z])(-|[a-zA-Z])(-|[a-zA-Z])(-|[a-zA-Z0-9]{1,4})(-|[0-9]+)(-|[0-9-]+)$/s";

preg_match($patron,$apc,$vars);

list($anterior,$s,$e,$r,$a,$t,$p,$x) = $vars;

echo "apc=".$apc."<br>";
echo "s=".$s."<br>";
echo "e=".$e."<br>";
echo "r=".$r."<br>";
echo "a=".$a."<br>";
echo "t=".$t."<br>";
echo "p=".$p."<br>";
echo "x=".$x."<br>";
?>