(PHP 5 >= 5.6.3, PHP 7)
phpdbg_break_next — Inserts a breakpoint at the next opcode
phpdbg_break_next ( ) : void
Insert a breakpoint at the next opcode.
This function has no parameters.
No value is returned.
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    https://www.php.net/manual/en/function.phpdbg-break-next.php