Regular expressions:
*String replacing with regular expression
String replacing with regular expression
suggest change$string = "a;b;c\nd;e;f";
// $1, $2 and $3 represent the first, second and third capturing groups
echo preg_replace("(^([^;]+);([^;]+);([^;]+)$)m", "$3;$2;$1", $string);Outputs
c;b;a
f;e;dSearches for everything between semicolons and reverses the order.
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