Extracting all values between curly braces regex php

Question

I have content in this form

$content =\"
This is a sample text where {123456} and {7894560} [\'These are samples\']{145789}
\";

Answer 1

DEMO :https://eval.in/84197

$content ="
This is a sample text where {123456} and {7894560} ['These are samples']{145789}
";
preg_match_all('/{(.*?)}/', $content, $matches);
foreach ($matches[1] as $a ){
echo $a." ";
}

Output:

123456 7894560 145789