- array_map: documentation ( source)
- implode: documentation ( source)
- explode: documentation ( source)
<?php
function ip_clean(string $ip) : ?string
{
return implode(
'.',
array_map(
function ($el) {
return (int) $el;
},
explode('.', $ip)
)
);
}
echo ip_clean('195.194.213.096'), PHP_EOL;