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PHP foreach loop through multidimensional array

I have a multidimensional array, how can I use it? I want to use every single array in a loop for

.

What I want to achieve is the ability to put each piece in my database, like db entry no. 0 → 1 and 4 write to db no. 1 → 5 and 6 record in db no. 2 → 1 and 4 and 5 and 6

I have this code:

<?php 
    print_r($calculatie_id); 
    for ($i=0; $i<=3; $i++) 
{ 
?>  
<tr> 
    <td> 

    <?php 
    foreach ($calculatie_id[$i] as $value) 
    { 
        echo $value; 
    } 
?>

print_r($calculatie_id); gives 
Array ( [0] => Array ( [0] => 4 [1] => 6 ) [1] => Array ( [0] => 1 [1] => 5 ) [2] => Array ( [0] => 5 [1] => 6 ) [3] => )

But when used foreach

I only get 46

Additional Information:

This array is created by multiple selection in a for loop. Any other suggestions are greatly appreciated.

    for ($i=0; $i<=$aantal_regels_corr; $i++)
{ 
?> 
<tr>
    <td>

        <?php 
        // maak select name
        $calculatie_id = 'calculatie_id'.$i;

        // rest van formulier
        if($error_vergeten[$i] == "ja"){ $error_omschr = $error_omschr_vergeten[$i]; include('includes/input_error.php'); } ?>&nbsp;<textarea rows="7" cols="80" name="omschrijving[]" /><?php echo $omschrijving[$i]; ?></textarea>
    </td>
    <td colspan="2">
        <select multiple="multiple" width="50" size="7" name="<?php echo $calculatie_id ?>[]" style="width: 150px">
        <?php
            $sql_calc = "select id, naam, actief from sp_calculatie WHERE (offerte_id = '".$row['off_offerte']."' OR offerte_id = '".$offerte_id."') AND actief = 'ja' ORDER BY id ASC";
            $res_calc = mysql_query($sql_calc,$con);  
            while ($row_calc = mysql_fetch_assoc($res_calc)){
        ?>
            <option value="<?php echo $row_calc["id"] ?>"><?php if (empty($row_calc["naam"])) { echo $row_calc["id"]; } else { echo $row_calc["naam"]; } ?></option>
        <?php } ?></select>
    </td>
</tr>
<?php } ?>
+2


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6 answers 


foreach($calculatie_id as $inner_arr)
    foreach($inner_arr as $value)
        echo $value;

Edit: you should try to find out and understand what's going on here. Then you can do whatever you want with the code I wrote. You said: gives 14561456 I want to use $calculatie_id0=14 $calculatie_id1=56 $calculatie_id2=1456

etc. Then you will need to do something like this:

foreach($calculatie_id as $index => $inner_arr){
    echo "$calculatie_id$index = "
    foreach($inner_arr as $value)
        echo $value;
    echo "<br/>";
}


Or you can create the variables you want (which doesn't make sense to me):

foreach($calculatie_id as $index => $inner_arr){
    ${"calculatie_id$index"} = '';
    foreach($inner_arr as $value)
        ${"calculatie_id$index"} .= $value;
    echo ${"calculatie_id$index"}."<br/>";
}
+6


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Basically, you have an array like this:

array(
 array(
  data
 )
)

All you need is:



foreach($yourArray as $innerArray)
 foreach($innerArray as $value)
  echo $value;

This will give you what you want. I'm not really sure why you are doing a for () loop and then a foreach.

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You need to nest loops foreach

(so you have a loop inside a loop)

0


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You can try:

foreach ($calculatie_id as $key => $value) {
  echo "$calculatie_id:".$key;
  for ($i=0;$i<=count($value);$i++) {
    echo $value[$i];
  }
}
0


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I don't understand why your original code snippet is not working. Could it be a fact that $calculatie_id[3]

it is not an array?

I've tried this:

<?php

$calculatie_id = array ( array(4,6), array(1,5), array(5,6), '' );

for ($i=0; $i<=3; $i++) 
{ 
  if(!is_array($calculatie_id[$i]))
    continue;
  echo "$i: ";
  foreach ($calculatie_id[$i] as $value) 
  { 
    echo $value; 
  } 
  echo '<br/>';
}

And what prints:

0: 46
1:15
2: 56

0


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Thanks so much for helping me on this, but all the examples I am trying to implement are not working. I have been trying this script for over 2 weeks now. I seem to be wrong.

I posted my code online at www.pws.nl/downloads/sp_offerte_add.rar. This should be easier than what I am writing in code right now.

0


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