PHP マニュアル: Dynamically changes the code of the given method

説明

bool runkit7_method_redefine(
    string $class_name,
    string $method_name,
    string $argument_list,
    string $code,
    int $flags = RUNKIT7_ACC_PUBLIC,
    string $doc_comment = null,
    string $return_type = ?,
    bool $is_strict = ?
)

bool runkit7_method_redefine(
    string $class_name,
    string $method_name,
    Closure $closure,
    int $flags = RUNKIT7_ACC_PUBLIC,
    string $doc_comment = null,
    string $return_type = ?,
    bool $is_strict = ?
)

パラメータ

class_name: The class in which to redefine the method
method_name: The name of the method to redefine
argument_list: Comma-delimited list of arguments for the redefined method
code: The new code to be evaluated when method_name is called
closure: A closure that defines the method.
flags: The redefined method can be RUNKIT7_ACC_PUBLIC, RUNKIT7_ACC_PROTECTED or RUNKIT7_ACC_PRIVATE optionally combined via bitwise OR with RUNKIT7_ACC_STATIC
doc_comment: The doc comment of the method.
return_type: The return type of the method.
is_strict: Whether the method behaves as if it was declared in a file with strict_types=1.

戻り値

成功した場合に true を、失敗した場合に false を返します。

例

例1 runkit7_method_redefine example

<?php
class Example {
    function foo() {
        return "foo!\n";
    }
}

// create an Example object
$e = new Example();

// output Example::foo() (before redefine)
echo "Before: " . $e->foo();

// Redefine the 'foo' method
runkit7_method_redefine(
    'Example',
    'foo',
    '',
    'return "bar!\n";',
    RUNKIT7_ACC_PUBLIC
);

// output Example::foo() (after redefine)
echo "After: " . $e->foo();
?>

上の例の出力は以下となります。

Before: foo!
After: bar!

参考

runkit7_method_add
runkit7_method_copy
runkit7_method_remove
runkit7_method_rename
runkit7_function_redefine