gistfile1.txt

<?php

$string = 'string';
$double = 12.12345;
$array = ['foo', 'bar'];
$a = 555;
$b = 'ZZZ';

var_dump(@($a + $b));
var_dump($a . $b);

$staff = [
    [
        'name'  => 'Иванов',
        'email' => 'ivanov@domain.com',
        'phone' => '111-22-33'
    ],
    [
        'name'  => 'Петров',
        'email' => 'petrov@domain.com',
        'phone' => '112-24-36,'
    ],
    [
        'name'  => 'Сидоров',
        'email' => 'petrov@domain.com',
        'phone' => '113-25-37'
    ]
];

$temp = [1, 2, 'A', 3.764, 34, 'B', 12];

$temp = array_filter($temp, function ($value) {
    return is_numeric($value);
});
var_dump($temp);

echo '<table style="width: 300px">';
$n = 0;
$red = 0x00;
$green = 0x00;
$blue = 0x00;
foreach (range(0, 1000) as $value) {
    $red++;
    $green++;
    $blue++;
    if ($red == 256) {
        $red = 0;
        $green = 0;
        $blue = 0;
    }
    $colorValue = $red < 16
        ? "#0" . dechex($red) . "0" . dechex($green) . "0" . dechex($blue)
        : "#" . dechex($red) . dechex($green) . dechex($blue);
    echo sprintf('<tr bgcolor="%s">', $colorValue);
    for ($td = 1; $td <= 3; $td++) {
        echo '<td>';
        if ($td == 1) {
            echo $n;
            $n++;
        }
        echo "</td>";
    }
    echo "</tr>";
}
echo '</table>';