PHP determines whether a variable contains (includes) a specific string_PHP tutorial

Question:

php determines whether a variable contains (includes) a specific string

If there is a variable
$liehuo_net="123456789.exe"

How to make the program make the following judgment:

If there is "exe" in $liehuo_net, then output "EXE"

If there is no "exe", determine whether there is "123"
If there is "123", output "one two three"

If not, output "none"

Answer:

$liehuo_net="123456789.exe";

if(strstr($liehuo_net,"exe"))
{
echo "exen ";
}
elseif(strstr($a,"123"))
{
echo "one two three n";
}
else
{
echo "Nothing";
}

?>

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