Increment variable within a foreach

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How do I make a variable increment within a foreach? 

foreach($adults as $adultos):
    $i = 1;
    echo "<strong>Quarto".$i++."</strong><br>";
    echo "Adultos:".$adultos."<br>";
endforeach;
php array loop foreach
  • 1

    Declare her out of the loop.

  • She’s incrementing normally on the first line echo. The real problem is that you restart it every iteration.

2 answers

4


Yes, just leave the variable setting out of the loop:

$i = 1;

foreach($adults as $adultos):
    echo "<strong>Quarto".$i++."</strong><br>";
    echo "Adultos:".$adultos."<br>";
endforeach;

Otherwise, at each loop iteration the variable is reset to the initial value 1.

If your array for sequential, i.e. non-associative, you won’t even need the control variable $i, because the key itself ends up playing that role:

foreach($adults as $i => $adultos):
    echo "<strong>Quarto".($i+1)."</strong><br>";
    echo "Adultos:".$adultos."<br>";
endforeach;

In this case I used $i+1 because the content of array starts at 0.

And the third option is using the loop for, as quoted in maniero’s response.

  • Thank you very much, you helped me a lot!

3

You can just take off the loop startup:

$adultos = array( "a", "b", "c" );
$i = 1;
foreach ($adultos as $adulto):
    echo "<strong>Quarto " . $i++ . "</strong><br>";
    echo "Adultos: " . $adulto . "<br>";
endforeach;

Or you can do the most appropriate thing in this case which is to use the for normal:

for ($i = 0; $i < count($adultos); $i++) {
    echo "<strong>Quarto ". ($i + 1) ."</strong><br>";
    echo "Adultos: " . $adultos[$i] . "<br>";
}

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

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