What are some common syntax errors when trying to output PHP variables in JavaScript alerts?

One common syntax error when trying to output PHP variables in JavaScript alerts is forgetting to echo the PHP variable within the <script> tags. To solve this issue, you need to properly concatenate the PHP variable with the JavaScript code using the echo statement. 

&lt;?php
$variable = &quot;Hello, World!&quot;;
echo &quot;&lt;script&gt;alert(&#039;&quot; . $variable . &quot;&#039;);&lt;/script&gt;&quot;;
?&gt;

Keywords

PHP JavaScript syntax errors output variables

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