我想知道如何使用 preg_match 或任何其他方法将以下字符串拆分为数组键值，我在阅读电子邮件内容时遇到了问题
$string = " username: demo password: 123456789"
我想喜欢这个
[username]=demo
[password]=12346890
改用preg_match_all()：
if (preg_match_all('/('w+):'s+('w+)/', $string, $matches)) {
$result = array_combine($matches[1], $matches[2]);
}
演示
它匹配一堆类似单词的东西，然后是一个冒号和空格，然后是另一堆类似单词的东西。
表达式详细信息
如果需要，也可以使用分解方法。
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
所以你可以做...
$string = " username: demo password: 123456789";
$string = trim($string); //Trim the string for first space like jack said
$stringsplit = explode(" ", $string);
echo $stringsplit[0] . " = " . $stringsplit[1];
echo $stringsplit[2] . " = " . $stringsplit[3];
//then build it to the way you want
//If you need it exactly the way you have it listed above it would be something like..
$stringsplit[0] = str_replace(":", "", $stringsplit[0]); //these 2 lines only to get
$stringsplit[2] = echo str_replace(":", "", $stringsplit[2]); //rid of the :
echo "[" . $stringsplit[0] . "]=" . $stringsplit[1];
echo "[" . $stringsplit[2] . "]=" . $stringsplit[3];