190318 面试题记录

<?php
// Q1
$str = '$123,000.00A';
$length = strlen($str);
$new_str = '';
for ($i = 0; $i < $length; $i++) {
    if (is_numeric($str{$i}) || in_array($str{$i}, [',', '.'])) {
        $new_str .= $str{$i};
    }
}
echo '<pre>';
echo $new_str;
echo '<hr>';
$replace_str = preg_replace('/[^(d|\,|.)*]/', '', $str);
echo $replace_str;
echo '<pre>';

// Q2
$arr = ['abcd', 'ad', 'a', 'abc'];

$new_arr = array_map('strlen', $arr);
$max_length = max($new_arr);
$min_length = min($new_arr);
echo 'max length is ' . $max_length . ' , min length is ' . $min_length;
echo '<hr>';

// Q3
$url = 'http://www.example.com/demo/index.php?age=10';
echo 'Scheme:' . $_SERVER['REQUEST_SCHEME'], '<br>';
echo 'Host:' . $_SERVER['HTTP_HOST'], '<br>';
echo 'Pathinfo:' . $_SERVER['REQUEST_URI'], '<br>';
var_dump(parse_url($url));

// Q4
header('Location:http://www.baidu.com');