[英]php curly braces replace values
I never used before curly braces in php 我从未在php中使用花括号
However i'm updating an existant website... 但是我正在更新一个现有的网站...
In database i have information such as in 在数据库中,我有诸如
YOUR NAME {CH_NAME} {URL_NAME}
I would like to retrieve the information and show it in appropriate I want to affect the CH_NAME Variable to a value & same to URL_NAME and in final show full infrmation such : 我想检索信息并将其显示在适当的位置,以使CH_NAME变量的值与URL_NAME相同,并最终显示完整的信息,例如:
1-Normal : 1-普通
$beforeStr="YOUR NAME {CH_NAME} {URL_NAME}";
$CH_NAME="John";
$URL_NAME="http://xxxx";
echo $beforeStr ; //would like to show : YOUR NAME John http://xxxx
Regards 问候
Only you have to use str_replace
: 只有您必须使用str_replace
:
$beforeStr="YOUR NAME {CH_NAME} {URL_NAME}";
$CH_NAME="John";
$URL_NAME="http://xxxx";
$OTHER = "OTHER";
$beforeStr = str_replace(
array('{CH_NAME}','{URL_NAME}','{OTHER}'),
array($CH_NAME,$URL_NAME,$OTHER),
$beforeStr);
echo $beforeStr ;
other way is: 另一种方法是:
$beforeStr = "YOUR NAME {CH_NAME} {URL_NAME} - {OTHER} ";
$variables = array(
'CH_NAME'=>'John',
'URL_NAME'=>'http://xxxx',
'OTHER'=>'other'
);
//if var exist then replace
$response = preg_replace_callback('/{(.+?)}/ix',function($match)use($variables){
return !empty($variables[$match[1]]) ? $variables[$match[1]] : $match[0];
},$beforeStr);
echo $response;
If you really want to use curly braces, try this. 如果您真的想使用花括号,请尝试此操作。 All replaces will be done automatically, just from matched variable names. 所有替换将自动完成,仅从匹配的变量名称开始。
$CH_NAME = "John";
$URL_NAME = "http://xxxx";
$beforeStr = "YOUR NAME {CH_NAME} {URL_NAME}";
preg_match_all('/{(\w+)}/', $beforeStr, $matches);
$afterStr = $beforeStr;
foreach ($matches[0] as $index => $var_name) {
if (isset(${$matches[1][$index]})) {
$afterStr = str_replace($var_name, ${$matches[1][$index]}, $afterStr);
}
}
echo $afterStr;
Use string interpolation. 使用字符串插值。 You need to use double-quote delimited strings "
. Then just prefix your braces with a dollar sign: 您需要使用双引号定界字符串"
。然后在括号中加一个美元符号:
echo "Hello ${NAME}";
The braces don't really do anything for you though, as the following works too: 括号实际上并没有为您做任何事情,因为以下方法也可以:
echo "Hello $NAME";
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