Question

该文件最初是这样的：

$字符串

redredredredgreengreengreengreengreenblackblackblackblackblackwhitewhitewhitewhitewhitewhitewhitewhitewhitewhitewhitegreenredorangeorangeorangeblackblackblackyellowyellowyellowyellow

foreach（$ inarray为$ k =＆gt; $ v）

所以我转换为数组

Array ( [0] => red[red] => 17 
        [1] => orange[orange] => 3 
        [2] => green[green] => 46 
        [3] => yellow[yellow] => 5 
        [4] => black[black] => 21 
        [5] => white[white] => 10 
      )

我是否像

一样读取数组

red is 17
orange is 3
green is 46
yellow is 5
black is 21
white is 10

目前我正在使用foreach（$ thisarray作为$ key =＆gt; $ value），但它读取的方式不是我期待的。非常感谢

Answer 1

<?php
$arr=array(0 => 'red[red] => 17',
        1=> 'orange[orange] => 3' ,
        2 => 'green[green] => 4' ,
        3 => 'yellow[yellow] => 5' ,
        4 => 'black[black] => 21' ,
        5 => 'white[white] => 10');


foreach ($arr as $k=>$v) {

    $str=preg_match('[[a-z \s]+]',$v,$match);
    $num=preg_match('/[0-9]+$/',$v,$matchnum);
    echo $match[0].' is '.$matchnum[0]."<br>";
}
?>

Answer 2

foreach ($array as $k=>$v) {
   $color = preg_replace('/\[.*\]/', '', $k);
   echo $color . ' is ' . $v;
}

Answer 3

你可能在阵列表示中有一些拼写错误。无论如何，要从字符串中读取，您可以使用sscanf(..)（我希望您检查字符串的有效性，当然还有sscanf(..)的返回值）：

<?php
    $output = array();
    $s = "red is 17";
    $arr = sscanf($s, "%s is %d");
    $output[$arr[0]] = $arr[1];
    print_r($output);
?>

输出：

Array
(
    [red] => 17
)

您可以轻松地将其扩展为读取数组内的多个字符串或其他内容。

HTH

Answer 4

不确定您是否寻找更简单的东西。但我想你想要这个：

<?php
  $colour = array()
    $color['red'] = 17;
    $color['orange'] = 3; 
    //etc


foreach ($colour as $name=>$value) {

   echo "<br> $name is $value";
}
?>

输出

red is 17
orange is 3

PHP数组读取

4 个答案: