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合并变量
原标题:Merge variables
  • 时间:2010-08-05 04:54:06
  •  标签:
  • php
  • merge

我们有<代码>$和$变量,这些变量每次改动。

每一条<代码> 我们应当创建新的变式<代码>_$temp_title_%id%,并给它$s Value。

和:

$id = 10;
$title =  Hello people! ;
$temp_title_10 =  Hello people! ;

从事这项工作:

$temp_title_ . $id = $title;

感谢。

最佳回答

如何使用阵列? 一个阵列是保存多种价值观的更好办法。 很多,/strong>更好。

$title_array = array();

$id = 10;
$title =  Hello people! ;
$title_array[$id] = $title;
问题回答

如果您的<代码>$id变量永远是惯用的,那么如果你重新尝试坚持您的变量的话,将其放在一个阵列中可能更好。

$persistence_array = array();

while (some_requirement) {
    $id = ...;
    $title = ...;
    $persistence_array[$id] = $title;
}

如果$id可能也含有甲型数字数据,那么你总是能够以同样的方式使用斜体/字典(用少量额外逻辑,你甚至可以为同一数字储存多种数值)。

<>DON T DO THIS: 如果你真的<>? 届时,您可使用variable factors。 但请不要。

使用:

$metavariable = "temp_title_".$id;
$$metavariable = $title;  // note the $$
${ temp_title_  . $id} = $title;
echo $temp_title_10;

我认为,你努力做些什么是坏的想法,但这里却想如何做:

$GLOBALS["temp_title_".$id]=$title;

或者,你可以这样做:

$varname="temp_title_".$id;
$$varname=$title;

我认为,你再次努力做到的最正确办法是使用一个阵列:

// Somewhere in the PHP script:
$an_array=array();

// To assign:
$an_array[$id]=$title;

// To retrieve:
echo $an_array[$id];




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