如何在 PHP 中成对分解字符串，两个键按切片

Question

$myvar1 = 'this car is most new and fast';
$myvar2 = explode(' ', $myvar1);  // slice on spaces
$myvar3 = implode( ',', $myvar2); //add comman
echo $myvar3;

output = this, car, is, most, new, and, fast

但我需要这个输出=这辆车，最新，速度最快

我需要成对输出。

谢谢大家

Answer 1

$myvar1 = 'this car is most new and fast';
preg_match_all('/([A-Za-z0-9\.]+(?: [A-Za-z0-9\.]+)?)/',
       $myvar1,$myvar2); // splits string on every other space
$myvar3 = implode( ',', $myvar2[0]); //add comman
echo $myvar3;

而不是 explode()，我使用 preg_match_all() 来拆分字符串，并使用 implode() 和 ',' 这是你的输出：

this car,is most,new and,fast

Answer 2

应该这样做：

<?php
$str = 'this car is most new and fast';
$str_explode = explode(' ', $str);
$str_result = '';
$comma = false;

foreach($str_explode AS $word) {
    $str_result .= $word;

    if($comma === false) {
        $str_result .= ' ';
        $comma = true;
    } else {
        $str_result .= ', ';
        $comma = false;
    }
}

echo $str_result;

它使用一个布尔值，每个运行设置为 true 和 false，因此仅每隔一个单词显示逗号。

如何在 PHP 中成对分解字符串，两个键按切片

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