golang 调用 php7详解及实例

执行php文件

func Test_exec(t *testing.T) {
  engine.Initialize()
  ctx := &engine.Context{
    Output: os.Stdout,
  }
  err := engine.RequestStartup(ctx)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.RequestShutdown(ctx)
  err = ctx.Exec("/tmp/index.php")
  if err != nil {
    fmt.Println(err)
  }
}

其中 /tmp/index.php 的内容为

<?php
echo("hellon");

Eval，返回值

func Test_eval(t *testing.T) {
  engine.Initialize()
  ctx := &engine.Context{}
  err := engine.RequestStartup(ctx)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.RequestShutdown(ctx)
  val, err := ctx.Eval("return 'hello';")
  if err != nil {
    fmt.Println(err)
  }
  defer engine.DestroyValue(val)
  if engine.ToString(val) != "hello" {
    t.FailNow()
  }
}

返回的value的生命周期所有权是golang程序，所以我们要负责DestroyValue

设置全局变量来传参

func Test_argument(t *testing.T) {
  engine.Initialize()
  ctx := &engine.Context{}
  err := engine.RequestStartup(ctx)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.RequestShutdown(ctx)
  err = ctx.Bind("greeting", "hello")
  if err != nil {
    fmt.Println(err)
  }
  val, err := ctx.Eval("return $greeting;")
  if err != nil {
    fmt.Println(err)
  }
  defer engine.DestroyValue(val)
  if engine.ToString(val) != "hello" {
    t.FailNow()
  }
}

传递进去的参数的生命周期是php控制的，在request shutdown的时候内存会被释放。

PHP 回调 Golang

type greetingProvider struct {
  greeting string
}

func (provider *greetingProvider) GetGreeting() string {
  return provider.greeting
}

func newGreetingProvider(args []interface{}) interface{} {
  return &greetingProvider{
    greeting: args[0].(string),
  }
}

func Test_callback(t *testing.T) {
  engine.Initialize()
  ctx := &engine.Context{}
  err := engine.RequestStartup(ctx)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.RequestShutdown(ctx)
  err = engine.Define("GreetingProvider", newGreetingProvider)
  if err != nil {
    fmt.Println(err)
  }
  val, err := ctx.Eval(`
  $greetingProvider = new GreetingProvider('hello');
  return $greetingProvider->GetGreeting();`)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.DestroyValue(val)
  if engine.ToString(val) != "hello" {
    t.FailNow()
  }
}

PHP 错误日志

func Test_log(t *testing.T) {
  engine.PHP_INI_PATH_OVERRIDE = "/tmp/php.ini"
  engine.Initialize()
  ctx := &engine.Context{
    Log: os.Stderr,
  }
  err := engine.RequestStartup(ctx)
  if err != nil {
    fmt.Println(err)
  }
  defer engine.RequestShutdown(ctx)
  _, err = ctx.Eval("error_log('hello', 4); trigger_error('sent from golang', E_USER_ERROR);")
  if err != nil {
    fmt.Println(err)
  }
}

其中 /tmp/php.ini 的内容为

error_reporting = E_ALL
error_log = "/tmp/php-error.log"
								 
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