preg_replace_callback()

preg_replace_callback()

function preg_replace_callback(string $pattern, callable $callback, string $subject): string

Performs a regular expression search and replace using a callback.

Parameters:

• $pattern (string)
• $callback (callable)
• $subject (string)

Returns: string

Availability

• Compiled (AOT): supported by the Elephc code generator.
• eval() (magician interpreter): supported — declarative interpreter builtin (crates/elephc-magician/src/interpreter/builtins/regex/preg_replace_callback.rs).

No examples yet — check examples/ and showcases/ for usage patterns.

Internals

For how preg_replace_callback is implemented in the compiler, see the internals page.