$fecha  = array();
foreach ($listado as $key => $value) {
      if (!in_array($value["fecha_cortada"], $fecha)) {
        array_push($fecha, $value["fecha_cortada"]);
      }
    }

    $horas  = ["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23"];

$item   = array();
    foreach ($fecha as $key) {
            for($i = 0; $i < 23; $i++ )
            {
                $data = array(
                    'fecha'         => $key." ".$horas[$i],
                    'fecha_cortada' => $key,
                    'hora_cortada'  => $horas[$i],
                    'IC'            => 0,
                    'OG'            => 0

function crearClaveDiaHora($dia, $hora, $sufijo){

        $clave = str_replace(' ', '-', $dia).'-'.$hora.'-'.$sufijo;
        return $clave;
    }

    function construirDefaults($semana){

        $horas = ["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23"];

        $item = []; //nueva sintaxis
        foreach ($semana as $dia) {
            foreach($horas as $hora)
            {
                $item[ crearClaveDiaHora($dia, $hora, 'IC' ) ] = 0;

SELECT fecha_cortada,hora_cortada,description,total
FROM tabla_resumen
WHERE fecha_cortada >= DATE_FORMAT(DATE_SUB(NOW(),INTERVAL 5 DAY),'%b %e')
	AND fecha_cortada <= DATE_FORMAT(NOW(),'%b %e')
GROUP BY fecha_cortada,hora_cortada,description
ORDER BY fecha_cortada,hora_cortada ASC

function crearClaveDiaHora($dia, $hora, $sufijo){

        $clave = str_replace(' ', '-', $dia).'-'.$hora.'-'.$sufijo;
        return $clave;
    }

    function construirDefaults($semana){

        $horas = ["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23"];

        $item = []; //nueva sintaxis
        foreach ($semana as $dia) {
            foreach($horas as $hora)
            {
                $item[ crearClaveDiaHora($dia, $hora, 'IC' ) ] = 0;

Array
(
    [Oct-20-00-IC] => 0
    [Oct-20-00-OG] => 0
    [Oct-20-01-IC] => 0
    [Oct-20-01-OG] => 0
    [Oct-20-02-IC] => 0
    [Oct-20-02-OG] => 0
    [Oct-20-03-IC] => 0
    [Oct-20-03-OG] => 0
    [Oct-20-04-IC] => 0
    [Oct-20-04-OG] => 0
    [Oct-20-05-IC] => 0
    [Oct-20-05-OG] => 0

    [Oct-26-16-OG] => 0
    [Oct-26-17-IC] => 0
    [Oct-26-17-OG] => 0
    [Oct-26-18-IC] => 0
    [Oct-26-18-OG] => 0
    [Oct-26-19-IC] => 0
    [Oct-26-19-OG] => 0
    [Oct-26-20-IC] => 0
    [Oct-26-20-OG] => 0
    [Oct-26-21-IC] => 0
    [Oct-26-21-OG] => 0
    [Oct-26-22-IC] => 0
    [Oct-26-22-OG] => 0
    [Oct-26-23-IC] => 0
    [Oct-26-23-OG] => 0
)

Array
(
    [0] => Oct 20
    [1] => Oct 21
    [2] => Oct 22
    [3] => Oct 23
    [4] => Oct 24
    [5] => Oct 25
    [6] => Oct 26
)

function recorrerListado($listado, &$item){
        foreach($listado as $reg ){
            $clave = crearClaveDiaHora( $reg['fecha_cortada'], $reg['hora_cortada'], $reg['descripcion']);
            $item[$clave] = $reg['total'];
            echo $clave;
        }
    }

function crearClaveDiaHora($dia, $hora, $sufijo){

        $clave = str_replace(' ', '-', $dia).'-'.$hora.'-'.$sufijo;
        return $clave;
    }

    function construirDefaults($semana){

        $horas = ["00","01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23"];

        $item = []; //nueva sintaxis
        foreach ($semana as $dia) {
            foreach($horas as $hora)
            {
                $item[ crearClaveDiaHora($dia, $hora, 'IC' ) ] = 0;

SELECT fecha_cortada,hora_cortada,description,total
            FROM tabla_resumen
            WHERE fecha_cortada >= DATE_FORMAT(DATE_SUB(NOW(),INTERVAL 5 DAY),'%b %e')
								AND fecha_cortada <= DATE_FORMAT(DATE_SUB(NOW(),INTERVAL 2 DAY),'%b %e')
            GROUP BY fecha_cortada,hora_cortada,description
            ORDER BY fecha_cortada,hora_cortada ASC