Question

我正在尝试创建一个joomla组件。该组件是关于生成一个句子。基本上，这是帮助我生成它的代码/函数。

function getCategory()
{
    $cat = array("walk","reside","eat");
    return $b = $cat[array_rand($cat)];
}
function getS1() //function 1.1
{
      $db = JFactory::getDBO();
      $query = "select words from #__wordbank where function = 1.1 order by rand() LIMIT 1";
      $db->setQuery($query);
      return $db->loadResult();
}

function getV11() //function 2.11
{
    $db = JFactory::getDBO();
    $b = getCategory();
    $query = "select words from #__wordbank where function = 2.11 AND category = '$b' order by rand() LIMIT 1";
    $db->setQuery($query);
    return $db->loadResult();
}
function getP1() //function p1.1
{
    //load preposition
    $db = JFactory::getDBO();
$b = getCategory();
    $query = "select words from #__wordbank where function = 'p1.1' AND category =   '$b' order by rand() LIMIT 1";
    $db->setQuery($query);
    return $db->loadResult();
}
function getP2() //function p1.2
{
    //load noun 
    $db = JFactory::getDBO();
    $b = getCategory();
    $query = "select words from #__wordbank where function = 'p1.2' AND category = '$b' order by RAND() limit 1";
    $db->setQuery($query);
    return $db->loadResult();
}

问题是当getCategory()返回值总是不同时。我尝试使用if else但由于$cat[array_rand($cat)]仍然返回不同的值。如果你们能帮我解决这个bug，我将不胜感激

Answer 1

你必须使用array_rend。此函数从数组中选择一个或多个随机条目

请参阅网址： -

http://php.net/manual/en/function.array-rand.php

<?php
$input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank");
$rand_keys = array_rand($input, 2);
echo $input[$rand_keys[0]] . "\n";
echo $input[$rand_keys[1]] . "\n";
?>

joomla组件中的错误

1 个答案: