例子 1

<?php
$file = "test.txt";
if(is_file($file))
{
echo ("$file is a regular file");
}
else
{
echo ("$file is not a regular file");
}
?>
輸出:
test.txt is a regular file
例子 2
<?php
var_dump(is_file('a_file.txt')) . "\n";
var_dump(is_file('/usr/bin/')) . "\n";
?>
輸出:
bool(true)
bool(false)

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