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我在PHP中有一个变量,我需要在我的JavaScript代码中使用它的值.如何将我的变量从PHP变为JavaScript？

我的代码看起来像这样:

<?php
     ...
     $val = $myService->getValue(); // Makes an API and database call
?>

我有需要的JavaScript代码,val并且看起来如下:

<script>
    myPlugin.start($val); // I tried this, but it didn't work
    <?php myPlugin.start($val); ?> // This didn't work either
    myPlugin.start(<?=$val?> // This works sometimes, but sometimes it fails
</script>