PHP:我如何调整PHPUnit以使用不同的PHP解释器？

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
         bootstrap="vendor/autoload.php"
         colors="true"
         verbose="true">
    <php>
       <server name="APP_ENV" value="testing"/>
        <ini name="error_reporting" value="-1"/>
        <ini name="memory_limit" value="-1"/>
        <ini name="xdebug.mode" value="coverage"/>
        <ini name="xdebug.start_with_request" value="yes"/>
        <ini name="xdebug.client_host" value="localhost"/>
        <ini name="xdebug.client_port" value="9003"/>
    </php>
    <testsuites>
        <testsuite name="Application Test Suite">
           <directory suffix="Test.php">./tests/</directory>
        </testsuite>
    </testsuites>
   <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
           <directory suffix=".php">./src/</directory>
        </whitelist>
    </filter>
</phpunit>

<php executable="/usr/local/bin/php">
    <!-- 其他配置信息 -->
</php>