Question

联合王国的员额代码与B9 7RL一样。

I would like to keep the first block then the first letter of the second block like this BB9 7

我当时正在利用这一机会,但只给我像这本B9一样的首选。

preg_split( /[, ();.]/ , trim($string))[0]

Answer 1

如果你知道直截了当的形式,如果至少有两部分,你可以分开检查。

然后从阵列第二个项目中分离出第一个特性。

对于模式,如果您具有与特性类别所列内容相匹配的连续特性,则可以添加一个倍数的“<代码>+>,使你在由此而产生的一系列预言中留下空的物品。

$string = "BB9 7RL";
$result = preg_split( /[, ();.]+/ , trim($string));
$postalCode = $result[0];

if (count($result) > 1) {
    $postalCode .= $result[1][0];
}
echo $postalCode;

产出

BB97

If you first want to validate the string for the postalcode first, you can refer to this page RegEx for matching UK Postcodes

Answer 2

您可以特别就你的情况尝试这一法典:

$postcode = "BB9 7RL";
$pattern =  /^([A-Z]{1,2}[0-9][A-Z0-9]?)s*([0-9])[A-Z]{2}$/i ;

if (preg_match($pattern, $postcode, $matches)) {
    $formatted = $matches[1] .     . $matches[2];
    echo $formatted; // Outputs: BB9 7
} else {
    echo "Invalid postcode";
}

您可核实其如何工作:https://onlinephp.io?s=TU9NC4JAEL0L_odBBN3wo7yEWUjegiDomFmrin4sbhrF9n_3q5&RWOYmTfz5sQ1ISVdFJR1nW5RgOGE9vrWQnjKG-1bAhvsw46N9S8aN5fF4bJUM0ZL

或这里是:https://onlinephp.io?s=fVFNS8NAEL0H8h-GUMgsyb1IjVKSC9aEYT1kTbZNpG1CdiNozH93NmVLe6hz2I_33nw85jZtysZ1Jk2tdF4XEu7Am89ncL188hKDC01

$postcode = "BB9 7RL";
$pattern =  /([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9][A-Za-z]?))))s?[0-9][A-Za-z]{2})/ ;

if (preg_match($pattern, $postcode, $matches)) {
    $formatted = substr($matches[0], 0, strpos($matches[0],    )) .     . $matches[0][strpos($matches[0],    ) + 1];
    echo $formatted; // Outputs: BB9 7
} else {
    echo "Invalid postcode";
}

友情链接