javascript - echo JS functions with PHP variables from SQL query

Question

I have functions stored in SQL table that I need to use inside JS. The problem is, that I also need to use PHP variables in these functions.

The following:

<?php
  $container='11';
  $title='Header';
  $function_text =
  <<<EOT
    $(function() {
      $('#container$container').parent('div').find('h3').html('$title');
    });
  EOT;
  echo $function_text;
?>

returns correctly:

$(function() {
  $('#container11').parent('div').find('h3').html('Header');
});

but this one:

<?php
  $ID=1;
  $container='11';
  $title='Header';
  $article = $cls -> Query(sprintf('SELECT * from graphs WHERE ID="%s"', $ID));
  $function_text = $article[0]['function'];
  echo $function_text;
?>

prints exactly the contents of SQL field, without recognising variables:

$(function() {
  $('#container$container').parent('div').find('h3').html('$title');
});

How could I get the variables to be injected to echoed text?

Answer 1

1. 更改存储在数据库中的数据，以便它使用格式占位符而不是对变量的引用：

   $(function() {
     $('#container%s').parent('div').find('h3').html('%s');
   });
   

2. 使用sprintf()：

   $function_text = sprintf($article[0]['function'], $container, $title);