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FILTER_SANITIZE_EMAILThe id of this filter is 517. We can sanitize any variable with email address to remove unwanted chars including blank space. This function FILTER_SANITIZE_EMAIL removes all except letters, digits and {|}!#/=$%*[]+-?^_`~&'@.Here is an example
$str='use= rid@example.com41!5~6+7'; // Change this value to get different result
$str = filter_var($str,FILTER_SANITIZE_EMAIL);
echo $str;
Output is here
use=rid@example.com41!5~6+7
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