js调用php函数的方法：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);

}

}});

您的_function_address.php如下所示：<?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);?>