php入門– filter_var()の使い方

サンプルコード
<?php
$var=350;

$int_options = array(
“options”=>array
(
“min_range”=>0,
“max_range”=>256
)
);

if(!filter_var($var, FILTER_VALIDATE_INT, $int_options))
{
echo(“Integer is not valid”);
}
else
{
echo(“Integer is valid”);
}
?>

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