如何通过JavaScript调用PHP函数？

时间：2021-05-09 01:11:19

I am trying to call a PHP function from an external PHP file into a JavaScript script. My code is different and large, so I am writing a sample code here.

我试图从外部PHP文件调用PHP函数到JavaScript脚本。我的代码不同而且很大，所以我在这里编写示例代码。

This is my PHP code:

这是我的PHP代码：

<?php
function add($a,$b){
  $c=$a+$b;
  return $c;
}
function mult($a,$b){
  $c=$a*$b;
  return $c;
}

function divide($a,$b){
  $c=$a/$b;
  return $c;
}
?>

This is my JavaScript code:

这是我的JavaScript代码：

<script>
  var phpadd= add(1,2); //call the php add function
  var phpmult= mult(1,2); //call the php mult function
  var phpdivide= divide(1,2); //call the php divide function
</script>

So this is what I want to do.

所以这就是我想要做的。

My original PHP file doesn't include these mathematical functions but the idea is same.

我原来的PHP文件不包含这些数学函数，但想法是一样的。

If some how it doesn't have a proper solution, then may you please suggest an alternative, but it should call values from external PHP.

如果某些方法没有适当的解决方案，那么请您建议一个替代方案，但它应该从外部PHP调用值。

9 个解决方案

#1

55  

Yes, you can do ajax request to server with your data in request parameters, like this (very simple):

是的，您可以使用请求参数中的数据向服务器执行ajax请求，这样（非常简单）：

Note that the following code uses jQuery

请注意，以下代码使用jQuery

jQuery.ajax({
    type: "POST",
    url: 'your_functions_address.php',
    dataType: 'json',
    data: {functionname: 'add', arguments: [1, 2]},

    success: function (obj, textstatus) {
                  if( !('error' in obj) ) {
                      yourVariable = obj.result;
                  }
                  else {
                      console.log(obj.error);
                  }
            }
});

and your_functions_address.php like this:

和your_functions_address.php这样：

    <?php
    header('Content-Type: application/json');

    $aResult = array();

    if( !isset($_POST['functionname']) ) { $aResult['error'] = 'No function name!'; }

    if( !isset($_POST['arguments']) ) { $aResult['error'] = 'No function arguments!'; }

    if( !isset($aResult['error']) ) {

        switch($_POST['functionname']) {
            case 'add':
               if( !is_array($_POST['arguments']) || (count($_POST['arguments']) < 2) ) {
                   $aResult['error'] = 'Error in arguments!';
               }
               else {
                   $aResult['result'] = add(floatval($_POST['arguments'][0]), floatval($_POST['arguments'][1]));
               }
               break;

            default:
               $aResult['error'] = 'Not found function '.$_POST['functionname'].'!';
               break;
        }

    }

    echo json_encode($aResult);

?>

#2

23  

Try This

尝试这个

<script>
  var phpadd= <?php echo add(1,2);?> //call the php add function
  var phpmult= <?php echo mult(1,2);?> //call the php mult function
  var phpdivide= <?php echo divide(1,2);?> //call the php divide function
</script>

#3

8  

use document.write for example,

以document.write为例，

<script>
  document.write(' <?php add(1,2); ?> ');
  document.write(' <?php milt(1,2); ?> ');
  document.write(' <?php divide(1,2); ?> ');
</script>

#4

6  

You need to create an API : Your js functions execute AJAX requests on your web service

您需要创建一个API：您的js函数在您的Web服务上执行AJAX请求

  var mult = function(arg1, arg2)
    $.ajax({
      url: "webservice.php?action=mult&arg1="+arg1+"&arg2="+arg2
    }).done(function(data) {
      console.log(data);
    });
  }

on the php side, you'll have to check the action parameter in order to execute the propre function (basically a switch statement on the $_GET["action"] variable)

在php方面，你必须检查action参数才能执行propre函数（基本上是$ _GET [“action”]变量的switch语句）

#5

3  

index.php

的index.php

<body>
...
<input id="Div7" name="Txt_Nombre" maxlenght="100px" placeholder="Nombre" />
<input id="Div8" name="Txt_Correo" maxlenght="100px" placeholder="Correo" />
<textarea id="Div9" name="Txt_Pregunta" placeholder="Pregunta" /></textarea>

<script type="text/javascript" language="javascript">

$(document).ready(function() {
    $(".Txt_Enviar").click(function() { EnviarCorreo(); });
});

function EnviarCorreo()
{
    jQuery.ajax({
        type: "POST",
        url: 'servicios.php',
        data: {functionname: 'enviaCorreo', arguments: [$(".Txt_Nombre").val(), $(".Txt_Correo").val(), $(".Txt_Pregunta").val()]}, 
         success:function(data) {
        alert(data); 
         }
    });
}
</script>

servicios.php

servicios.php

<?php   
    include ("correo.php");

    $nombre = $_POST["Txt_Nombre"];
    $correo = $_POST["Txt_Corro"];
    $pregunta = $_POST["Txt_Pregunta"];

    switch($_POST["functionname"]){ 

        case 'enviaCorreo': 
            EnviaCorreoDesdeWeb($nombre, $correo, $pregunta);
            break;      
    }   
?>

correo.php

correo.php

<?php
    function EnviaCorreoDesdeWeb($nombre, $correo, $pregunta)
    { 
       ...
    }
?>

#6

1  

Try looking at CASSIS. The idea is to mix PHP with JS so both can work on client and server side.

试着看看CASSIS。我们的想法是将PHP与JS混合使用，因此它们都可以在客户端和服务器端工作。

#7

1  

I wrote some script for me its working .. I hope it may useful to you

我写了一些脚本给我工作..我希望它对你有用

<?php
if(@$_POST['add'])
{
function add()
{
   $a="You clicked on add fun";
   echo $a;
}
add();
}
else if (@$_POST['sub']) 
{
function sub()
{
   $a="You clicked on sub funn";
echo $a;  
}
sub();  
}
?>
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="POST">

<input type="submit" name="add" Value="Call Add fun">
<input type="submit" name="sub" Value="Call Sub funn">
<?php echo @$a; ?>

</form>

#8

1  

If you actually want to send data to a php script for example you can do this:

如果你真的想要将数据发送到php脚本，例如你可以这样做：

The php:

PHP：

<?php
$a = $_REQUEST['a'];
$b = $_REQUEST['b']; //totally sanitized

echo $a + $b;
?>

Js (using jquery):

Js（使用jquery）：

$.post("/path/to/above.php", {a: something, b: something}, function(data){                                          
  $('#somediv').html(data);
});

#9

1  

This work perfectly for me:

To call a PHP function (with parameters too) you can, like a lot of people said, send a parameter opening the PHP file and from there check the value of the parameter to call the function. But you can also do that lot of people say it's impossible: directly call the proper PHP function, without adding code to the PHP file.

要调用PHP函数（也有参数），你可以像很多人说的那样，发送一个打开PHP文件的参数，并从那里检查参数的值来调用函数。但你也可以做很多人说这是不可能的：直接调用正确的PHP函数，而不需要在PHP文件中添加代码。

I found a way:

我找到了一个方法：

This for JavaScript:

这适用于JavaScript：

function callPHP(expression, objs, afterHandler) {
        expression = expression.trim();
        var si = expression.indexOf("(");
        if (si == -1)
            expression += "()";
        else if (Object.keys(objs).length > 0) {
            var sfrom = expression.substring(si + 1);
            var se = sfrom.indexOf(")");
            var result = sfrom.substring(0, se).trim();
            if (result.length > 0) {
                var params = result.split(",");
                var theend = expression.substring(expression.length - sfrom.length + se);
                expression = expression.substring(0, si + 1);
                for (var i = 0; i < params.length; i++) {
                    var param = params[i].trim();
                    if (param in objs) {
                        var value = objs[param];
                        if (typeof value == "string")
                            value = "'" + value + "'";
                        if (typeof value != "undefined")
                            expression += value + ",";
                    }
                }
                expression = expression.substring(0, expression.length - 1) + theend;
            }
        }
        var doc = document.location;
        var phpFile = "URL of your PHP file";
        var php =
            "$docl = str_replace('/', '\\\\', '" + doc + "'); $absUrl = str_replace($docl, $_SERVER['DOCUMENT_ROOT'], str_replace('/', '\\\\', '" + phpFile + "'));" +
            "$fileName = basename($absUrl);$folder = substr($absUrl, 0, strlen($absUrl) - strlen($fileName));" +
            "set_include_path($folder);include $fileName;" + expression + ";";
        var url = doc + "/phpCompiler.php" + "?code=" + encodeURIComponent(php);
        $.ajax({
            type: 'GET',
            url: url,
            complete: function(resp){
                var response = resp.responseText;
                afterHandler(response);
            }
        });
    }


This for a PHP file which isn't your PHP file, but another, which path is written in url variable of JS function callPHP , and it's required to evaluate PHP code. This file is called 'phpCompiler.php' and it's in the root directory of your website:

对于PHP文件而言，这不是您的PHP文件，而是另一个，该路径是用JS函数callPHP的url变量编写的，并且需要评估PHP代码。这个文件名为'phpCompiler.php'，它位于您网站的根目录中：

<?php
$code = urldecode($_REQUEST['code']);
$lines = explode(";", $code);
foreach($lines as $line)
    eval(trim($line, " ") . ";");
?>


So, your PHP code remain equals except return values, which will be echoed:

因此，除了返回值之外，您的PHP代码保持等于，这将被回显：

<?php
function add($a,$b){
  $c=$a+$b;
  echo $c;
}
function mult($a,$b){
  $c=$a*$b;
  echo $c;
}

function divide($a,$b){
  $c=$a/$b;
  echo $c;
}
?>


I suggest you to remember that jQuery is required:
Download it from Google CDN:

我建议你记住jQuery是必需的：从谷歌CDN下载：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

or from Microsoft CDN: "I prefer Google! :)"

或者来自Microsoft CDN：“我更喜欢谷歌！:)”

<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.1.min.js"></script>

Better is to download the file from one of two CDNs and put it as local file, so the startup loading of your website's faster!

更好的是从两个CDN之一下载文件并将其作为本地文件，因此您的网站的启动加载速度更快！

The choice is to you!

选择权在你身边！


Now you finished! I just tell you how to use callPHP function. This is the JavaScript to call PHP: 

//Names of parameters are custom, they haven't to be equals of these of the PHP file.
//These fake names are required to assign value to the parameters in PHP
//using an hash table.
callPHP("add(num1, num2)", {
            'num1' : 1,
            'num2' : 2
        },
            function(output) {
                alert(output); //This to display the output of the PHP file.
        });

#1

55  

Yes, you can do ajax request to server with your data in request parameters, like this (very simple):

是的，您可以使用请求参数中的数据向服务器执行ajax请求，这样（非常简单）：

Note that the following code uses jQuery

请注意，以下代码使用jQuery

jQuery.ajax({
    type: "POST",
    url: 'your_functions_address.php',
    dataType: 'json',
    data: {functionname: 'add', arguments: [1, 2]},

    success: function (obj, textstatus) {
                  if( !('error' in obj) ) {
                      yourVariable = obj.result;
                  }
                  else {
                      console.log(obj.error);
                  }
            }
});

and your_functions_address.php like this:

和your_functions_address.php这样：

    <?php
    header('Content-Type: application/json');

    $aResult = array();

    if( !isset($_POST['functionname']) ) { $aResult['error'] = 'No function name!'; }

    if( !isset($_POST['arguments']) ) { $aResult['error'] = 'No function arguments!'; }

    if( !isset($aResult['error']) ) {

        switch($_POST['functionname']) {
            case 'add':
               if( !is_array($_POST['arguments']) || (count($_POST['arguments']) < 2) ) {
                   $aResult['error'] = 'Error in arguments!';
               }
               else {
                   $aResult['result'] = add(floatval($_POST['arguments'][0]), floatval($_POST['arguments'][1]));
               }
               break;

            default:
               $aResult['error'] = 'Not found function '.$_POST['functionname'].'!';
               break;
        }

    }

    echo json_encode($aResult);

?>

#2

23  

Try This

尝试这个

<script>
  var phpadd= <?php echo add(1,2);?> //call the php add function
  var phpmult= <?php echo mult(1,2);?> //call the php mult function
  var phpdivide= <?php echo divide(1,2);?> //call the php divide function
</script>

#3

8  

use document.write for example,

以document.write为例，

<script>
  document.write(' <?php add(1,2); ?> ');
  document.write(' <?php milt(1,2); ?> ');
  document.write(' <?php divide(1,2); ?> ');
</script>

#4

6  

You need to create an API : Your js functions execute AJAX requests on your web service

您需要创建一个API：您的js函数在您的Web服务上执行AJAX请求

  var mult = function(arg1, arg2)
    $.ajax({
      url: "webservice.php?action=mult&arg1="+arg1+"&arg2="+arg2
    }).done(function(data) {
      console.log(data);
    });
  }

on the php side, you'll have to check the action parameter in order to execute the propre function (basically a switch statement on the $_GET["action"] variable)

在php方面，你必须检查action参数才能执行propre函数（基本上是$ _GET [“action”]变量的switch语句）

#5

3  

index.php

的index.php

<body>
...
<input id="Div7" name="Txt_Nombre" maxlenght="100px" placeholder="Nombre" />
<input id="Div8" name="Txt_Correo" maxlenght="100px" placeholder="Correo" />
<textarea id="Div9" name="Txt_Pregunta" placeholder="Pregunta" /></textarea>

<script type="text/javascript" language="javascript">

$(document).ready(function() {
    $(".Txt_Enviar").click(function() { EnviarCorreo(); });
});

function EnviarCorreo()
{
    jQuery.ajax({
        type: "POST",
        url: 'servicios.php',
        data: {functionname: 'enviaCorreo', arguments: [$(".Txt_Nombre").val(), $(".Txt_Correo").val(), $(".Txt_Pregunta").val()]}, 
         success:function(data) {
        alert(data); 
         }
    });
}
</script>

servicios.php

servicios.php

<?php   
    include ("correo.php");

    $nombre = $_POST["Txt_Nombre"];
    $correo = $_POST["Txt_Corro"];
    $pregunta = $_POST["Txt_Pregunta"];

    switch($_POST["functionname"]){ 

        case 'enviaCorreo': 
            EnviaCorreoDesdeWeb($nombre, $correo, $pregunta);
            break;      
    }   
?>

correo.php

correo.php

<?php
    function EnviaCorreoDesdeWeb($nombre, $correo, $pregunta)
    { 
       ...
    }
?>

#6

1  

Try looking at CASSIS. The idea is to mix PHP with JS so both can work on client and server side.

试着看看CASSIS。我们的想法是将PHP与JS混合使用，因此它们都可以在客户端和服务器端工作。

#7

1  

I wrote some script for me its working .. I hope it may useful to you

我写了一些脚本给我工作..我希望它对你有用

<?php
if(@$_POST['add'])
{
function add()
{
   $a="You clicked on add fun";
   echo $a;
}
add();
}
else if (@$_POST['sub']) 
{
function sub()
{
   $a="You clicked on sub funn";
echo $a;  
}
sub();  
}
?>
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="POST">

<input type="submit" name="add" Value="Call Add fun">
<input type="submit" name="sub" Value="Call Sub funn">
<?php echo @$a; ?>

</form>

#8

1  

If you actually want to send data to a php script for example you can do this:

如果你真的想要将数据发送到php脚本，例如你可以这样做：

The php:

PHP：

<?php
$a = $_REQUEST['a'];
$b = $_REQUEST['b']; //totally sanitized

echo $a + $b;
?>

Js (using jquery):

Js（使用jquery）：

$.post("/path/to/above.php", {a: something, b: something}, function(data){                                          
  $('#somediv').html(data);
});

#9

1  

This work perfectly for me:

To call a PHP function (with parameters too) you can, like a lot of people said, send a parameter opening the PHP file and from there check the value of the parameter to call the function. But you can also do that lot of people say it's impossible: directly call the proper PHP function, without adding code to the PHP file.

要调用PHP函数（也有参数），你可以像很多人说的那样，发送一个打开PHP文件的参数，并从那里检查参数的值来调用函数。但你也可以做很多人说这是不可能的：直接调用正确的PHP函数，而不需要在PHP文件中添加代码。

I found a way:

我找到了一个方法：

This for JavaScript:

这适用于JavaScript：

function callPHP(expression, objs, afterHandler) {
        expression = expression.trim();
        var si = expression.indexOf("(");
        if (si == -1)
            expression += "()";
        else if (Object.keys(objs).length > 0) {
            var sfrom = expression.substring(si + 1);
            var se = sfrom.indexOf(")");
            var result = sfrom.substring(0, se).trim();
            if (result.length > 0) {
                var params = result.split(",");
                var theend = expression.substring(expression.length - sfrom.length + se);
                expression = expression.substring(0, si + 1);
                for (var i = 0; i < params.length; i++) {
                    var param = params[i].trim();
                    if (param in objs) {
                        var value = objs[param];
                        if (typeof value == "string")
                            value = "'" + value + "'";
                        if (typeof value != "undefined")
                            expression += value + ",";
                    }
                }
                expression = expression.substring(0, expression.length - 1) + theend;
            }
        }
        var doc = document.location;
        var phpFile = "URL of your PHP file";
        var php =
            "$docl = str_replace('/', '\\\\', '" + doc + "'); $absUrl = str_replace($docl, $_SERVER['DOCUMENT_ROOT'], str_replace('/', '\\\\', '" + phpFile + "'));" +
            "$fileName = basename($absUrl);$folder = substr($absUrl, 0, strlen($absUrl) - strlen($fileName));" +
            "set_include_path($folder);include $fileName;" + expression + ";";
        var url = doc + "/phpCompiler.php" + "?code=" + encodeURIComponent(php);
        $.ajax({
            type: 'GET',
            url: url,
            complete: function(resp){
                var response = resp.responseText;
                afterHandler(response);
            }
        });
    }


This for a PHP file which isn't your PHP file, but another, which path is written in url variable of JS function callPHP , and it's required to evaluate PHP code. This file is called 'phpCompiler.php' and it's in the root directory of your website:

对于PHP文件而言，这不是您的PHP文件，而是另一个，该路径是用JS函数callPHP的url变量编写的，并且需要评估PHP代码。这个文件名为'phpCompiler.php'，它位于您网站的根目录中：

<?php
$code = urldecode($_REQUEST['code']);
$lines = explode(";", $code);
foreach($lines as $line)
    eval(trim($line, " ") . ";");
?>


So, your PHP code remain equals except return values, which will be echoed:

因此，除了返回值之外，您的PHP代码保持等于，这将被回显：

<?php
function add($a,$b){
  $c=$a+$b;
  echo $c;
}
function mult($a,$b){
  $c=$a*$b;
  echo $c;
}

function divide($a,$b){
  $c=$a/$b;
  echo $c;
}
?>


I suggest you to remember that jQuery is required:
Download it from Google CDN:

我建议你记住jQuery是必需的：从谷歌CDN下载：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

or from Microsoft CDN: "I prefer Google! :)"

或者来自Microsoft CDN：“我更喜欢谷歌！:)”

<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.1.min.js"></script>

Better is to download the file from one of two CDNs and put it as local file, so the startup loading of your website's faster!

更好的是从两个CDN之一下载文件并将其作为本地文件，因此您的网站的启动加载速度更快！

The choice is to you!

选择权在你身边！


Now you finished! I just tell you how to use callPHP function. This is the JavaScript to call PHP: 

//Names of parameters are custom, they haven't to be equals of these of the PHP file.
//These fake names are required to assign value to the parameters in PHP
//using an hash table.
callPHP("add(num1, num2)", {
            'num1' : 1,
            'num2' : 2
        },
            function(output) {
                alert(output); //This to display the output of the PHP file.
        });
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