php中的$ variable和@ $变量之间的区别[重复]

Question

This question already has an answer here:

• 'At' symbol before variable name in PHP: @$_POST 4 answers

Can you please tell me the difference between $variable and @$variable in php

<?php
 curl function abc
{
 get information of url and return information string
}
$html=abc();
$doc=DOMDocument();
@$doc->LoadHTML($html); 
?>

here if we take normal variable it gives error why its so and whats the difference

</div>

Answer 1

A @ before a function call means "suppress warnings".

So, @$doc->LoadHTML($html); suppresses warnings from the method call (LoadHTML()).

In general this is a bad idea, because the warnings mean you are doing something wrong, and you would better fix that instead of playing deaf.