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josanangel
Asked: 2020-04-28 05:15:33 +0800 CST 2020-04-28 05:15:33 +0800 CST

Php how can I traverse this multidimensional array

  • 772

I have this multidimensional array with the name $mensajes: 

[0] => Array (
        [id] => 140
        [titulo] => titulo mensaje 1
        [contenido] => contenido mensaje 1
        [createAt] => 2019-04-25 20:27:59
        [creador] => 1
        [url_img] => 5cc1fc2f3462c0.37633589.png
        [etiquetas] => Array (
            [ids] => Array (
                [0] => 90
                [1] => 89
                )
            [nombres] => Array (
                [0] => etiqueta_mensaje_uno
                [1] => comun
                )
            )
        )
    [1] => Array (
        [id] => 141
        [titulo] => titulo mensaje 2
        [contenido] => contenido mensaje 2
        [createAt] => 2019-04-25 20:29:15
        [creador] => 1
        [url_img] => 5cc1fc7ba0c713.37620569.png
        [etiquetas] => Array (
            [ids] => Array (
                [0] => 91
                [1] => 89
                )
            [nombres] => Array (
                [0] => etiqueta_mensaje_dos
                [1] => comun
                )
            )
        )

First out of curiosity I did a var_dump() but I don't get all the data from it, the arrayschildren are shown to me with a few simple points ..., and that and nothing is the same.

array (size=2)
  0 => 
    array (size=7)
      'id' => string '140' (length=3)
      'titulo' => string 'titulo mensaje 1' (length=16)
      'contenido' => string 'contenido mensaje 1' (length=19)
      'createAt' => string '2019-04-25 20:27:59' (length=19)
      'creador' => string '1' (length=1)
      'url_img' => string '5cc1fc2f3462c0.37633589.png' (length=27)
      'etiquetas' => 
        array (size=2)
          'ids' => 
            array (size=2)
              ...
          'nombres' => 
            array (size=2)
              ...
  1 => 
    array (size=7)
      'id' => string '141' (length=3)
      'titulo' => string 'titulo mensaje 2' (length=16)
      'contenido' => string 'contenido mensaje 2' (length=19)
      'createAt' => string '2019-04-25 20:29:15' (length=19)
      'creador' => string '1' (length=1)
      'url_img' => string '5cc1fc7ba0c713.37620569.png' (length=27)
      'etiquetas' => 
        array (size=2)
          'ids' => 
            array (size=2)
              ...
          'nombres' => 
            array (size=2)
              ...

I tried to go through them with one foreach()that would be logical, but apparently it has conflicts when reading the arrays children:

foreach ($mensajes as $key ) {
            echo "<p>" . $key['id'] . "</p>";
            echo "<p>" . $key['titulo'] . "</p>";
            echo "<p>" . $key['contenido'] . "</p>";
            echo "<p>" . $key['createAt'] . "</p>";
            echo "<p>" . $key['creador'] . "</p>";
            echo "<p>" . $key['url_img'] . "</p>";
            foreach ($key['etiquetas'] as $key2 ) {
                echo "<p>" . $key2['ids'] . "</p>";
                echo "<p>" . $key2['nombres'] . "</p>";
            }
            echo "----------------<br>";

    }

What is the optimal way to go through me arraythat is in an associative way of course, without numbers in the indexes but its key

php

1 Answers

  1. Best Answer

    Since you have the array organized, you cannot access the arrays inside etiquetasusing the nested for.

    The problem is that the arrays are in the keys idsand nombresso you would have to access them directly from $keyand start looping through them with a for, or use conditionals or something.

    The simplest way might be by reaching the arrays directly and then outputting the values ​​as implode.

    Let's look at an example:

    $html="";
foreach ($mensajes as $key ) {
    $html.="<p>$key[id]</p>";
    $html.="<p>$key[titulo]</p>";
    $html.="<p>$key[contenido]</p>";
    $html.="<p>$key[createAt]</p>";
    $html.="<p>$key[creador]</p>";
    $html.="<p>$key[url_img]</p>";
    /*Esto en vez del for anidado*/
    $arrIds=$key['etiquetas']['ids'];
    $arrNames=$key['etiquetas']['nombres'];

    $html.= "<p>IDs : <br />".implode("<br>",$arrIds)."</p>";
    $html.= "<p>Nombres : <br />".implode("<br />",$arrNames)."</p>";
    $html.="----------------<br>";
}

echo $html;

    Departure:

    <p>140</p>
<p>titulo mensaje 1</p>
<p>contenido mensaje 1</p>
<p>2019-04-25 20:27:59</p>
<p>1</p>
<p>5cc1fc2f3462c0.37633589.png</p>
<p>IDs : <br />90<br> 89</p>
<p>Nombres : <br />etiqueta_mensaje_uno<br> comun</p>----------------<br>

    • 3