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我见过@某些功能的使用,如下所示:

$fileHandle = @fopen($fileName, $writeAttributes);

这个符号有什么用？

可能重复:
PHP中的@符号有什么用？
参考 - 这个符号在PHP中意味着什么？

用什么 <?php echo @$fnameerror; ?>意思.为什么在php中使用@之前的变量