PHP マニュアル: Blacklists a function from being JIT compiled

void opcache_jit_blacklist( Closure $closure )

This function blacklists a particular function from being JIT compiled when Tracing JIT is in use. The function is specified using a Closure.

警告

Any parts of the function that were already JIT compiled remain unaffected and will still be JIT compiled.

closure: The function to blacklist, represented as a first class callable. It is also possible to pass an anonymous function, in which case the anonymous function itself is blacklisted.

値を返しません。

例1 opcache_jit_blacklist basic example

<?php
function foo() {
    $x = 1;
    $x += 0;
    ++$x;
    var_dump($x);
}
opcache_jit_blacklist(foo(...));
foo();
?>