在laravel中使用composer 自动加载helpers.php

"autoload": {
    "classmap": [
        "database/seeds",
        "database/factories"
    ],
    "psr-4": {
        "App\\": "app/"
    },
    "files":[
        "app/helpers.php"
    ]
},

自定义函数写在app/helpers.php中，执行composer du 即可