如何在JavaScript或jQuery中访问PHP变量而不是<？php echo $ variable？>

问题描述：

如何在JavaScript或jQuery中访问PHP变量？我是否必须写

How do I access PHP variables in JavaScript or jQuery? Do I have to write

<?php echo $variable1 ?>
<?php echo $variable2 ?>
<?php echo $variable3 ?>
...
<?php echo $variablen ?>

我知道我可以在cookie中存储一些变量，并通过cookie访问这些值，但cookie中的值是相对稳定的价值观。而且，有一个限制，你不能在cookie中存储很多值，并且方法不那么方便。有没有更好的方法呢？

I know I can store some variables in cookies, and access these values via cookies, but values in cookies are relatively stable values. Moreover, there is a limit, you can not store many values in cookies, and the method is not that convenient. Is there a better way to do it?

答

您的示例显示了将PHP变量传递给JavaScript的最简单方法。您还可以使用json_encode来处理更复杂的数据：

Your example shows the most simple way of passing PHP variables to JavaScript. You can also use json_encode for more complex things like arrays:

<?php
    $simple = 'simple string';
    $complex = array('more', 'complex', 'object', array('foo', 'bar'));
?>
<script type="text/javascript">
    var simple = '<?php echo $simple; ?>';
    var complex = <?php echo json_encode($complex); ?>;
</script>

除此之外，如果你真的想在PHP和JavaScript之间互动，你应该使用Ajax。

Other than that, if you really want to "interact" between PHP and JavaScript you should use Ajax.

使用cookie是一种非常不安全和不可靠的方式，因为它们存储在客户端，因此可以进行任何操作，甚至不会被接受/保存。不要将它们用于此类交互。
jQuery.ajax 是一个很好的开始恕我直言。

Using cookies for this is a very unsafe and unreliable way, as they are stored clientside and therefore open for any manipulation or won't even get accepted/saved. Don't use them for this type of interaction. jQuery.ajax is a good start IMHO.

如何在JavaScript或jQuery中访问PHP变量而不是<？php echo $ variable？>

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