preg_replace with curly brackets

I'd like to replace the string "{{edit(3)}}" with "open3close" using pre开发者_运维百科g_replace

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Escape { and } to \{ and \} in regex string

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I'm sorry if you wasted your time, i found a valid solution.

preg_replace("/{{edit\((.*)\)}}/e","'open'.'\\\1'.'close'", $string);

input : {{edit(3)}}
output: open3close