MPDF mounting with php foreach , bootstrap and html

Question

I am trying to generate the MPDF, but this error appears:

PHP Parse error: syntax error, Unexpected 'foreach' (T_FOREACH)

This error is accusing in the second line that is the first foreach.

$prova = unserialize($row['prova']);

$html = " <div class='row'>
            ".foreach($prova[0] as $idPergunta => $rowPergunta) {."
              <div class='col-sm-6'>
                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>
                              <h4><b>".echo $rowPergunta;."</b></h4>
                          </div>
                      </div>
                  </div>

                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>
                              ".foreach($prova[1][$idPergunta] as $rowRespostas) {."
                                ".echo $rowRespostas;."
                              "}"
                          </div>
                      </div>
                  </div>

              </div>

                ".$rowCount++;
                if($rowCount % $numOfCols == 0) echo '</div><div class='row'>';
                $i++; }."

            ".}."
          </div>
        ";

Answer 1

You are concatenating a foreach, and that’s a syntax error. foreach is not an expression or method to be concatenated. The ideal in this scenario is to dispose the contents of the foreach directly in the string $html:

$prova = unserialize($row['prova']);

$html = " <div class='row'>
            <?php foreach($prova[0] as $idPergunta => $rowPergunta) { ?>
              <div class='col-sm-6'>
                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>
                              <h4><b><?php echo $rowPergunta . '<br/>'; ?></b></h4>
                          </div>
                      </div>
                  </div>

                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>
                              <?php foreach($prova[1][$idPergunta] as $rowRespostas)
                                 echo $rowRespostas . <br/>;
                              } ?>
                          </div>
                      </div>
                  </div>

              </div>

                <?php
                $rowCount++;
                if($rowCount % $numOfCols == 0) 
                      echo '</div><div class=\'row\'>';
                $i++;

            } ?>
          </div>
        ";

This code will make a post-processing so that echo $html; is performed. This way, the code will execute after the procedure.

Scenario update

The method WriteHTML of lib MPDF prints an HTML code only, and PHP does not run. Therefore, post-processing does not work on this occasion.

You can also do with preprocessing, thus, HTML already comes pure and ready, without PHP built in:

$html = "<div class='row'>";

foreach($prova[0] as $idPergunta => $rowPergunta) {
    $html .= "<div class='col-sm-6'>
                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>
                              <h4><b>".echo $rowPergunta;."</b></h4>
                          </div>
                      </div>
                  </div>

                  <div class='row'>
                      <div class=''>
                          <div class='form-group'>";

    foreach($prova[1][$idPergunta] as $rowRespostas)
        $html .= $rowRespostas . "<br/>";
    }

    $html .= "</div> </div> </div> </div>";

    $rowCount++;
    if($rowCount % $numOfCols == 0) 
         $html .= "</div><div class='row'>";
    $i++;
}

echo $html;