正则替换的问题

Question

字符串=12#{店铺dagf称}gds#{奋斗区}sffd#{店盖饭}fdf#{奋斗}fsa用正则替换成12{$var1}gds{$var2}sffd{$var3}fdf{$var4}fsa如何做到.

Answer 1

$count=0;
$str='12#{店铺dagf称}gds#{奋斗区}sffd#{店盖饭}fdf#{奋斗}fsa';
$str=preg_replace_callback('/#\{[^}]*\}/',function()use(&$count){
return'{$var'.++$count.'}';
},$str);
print_r($str);
运行结果：
12{$var1}gds{$var2}sffd{$var3}fdf{$var4}fsa