Php 集合MongoDB没有文本索引

我试着运行这个简单的示例来尝试如何在Mongo2.4中使用textSearch feauture的示例（在MongoDB网站上找到）

 <?php
    $m = new Mongo();
    $d = $m->demo;
    $c = $d->planets;

    $c->insert(array("name" => "Mercury", "desc" => "Mercury is the smallest and closest to the Sun"));
    $c->insert(array("name" => "Venus", "desc" => "Venus is the second planet from the Sun, orbiting it every 224.7 Earth days."));
    $c->insert(array("name" => "Earth", "desc" => "Earth is the the densest of the eight planets in the Solar System."));
    $c->insert(array("name" => "Mars", "desc" => "Mars is named after the Roman god of war."));


    $c->ensureIndex(array('desc' => 'text'));

    $r = $d->command(array("text" => "planets", 'search' => "sun" ));
    print_r($r);

    ?>

并且文本搜索已启用

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谢谢你的帮助

我找到了解决方案，显然我们需要在字段上定义索引之前（文本索引）：

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在创建文本索引或使用text命令之前，需要显式启用该功能

您可以使用textSearchEnabled参数在启动时启用文本搜索功能：

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mongod--setParameter textSearchEnabled=true

从MongoDB 2.6.x开始，默认情况下启用文本搜索。在MongoDB 2.4.x上，需要如上所示启用它

$c->ensureIndex(array('desc' => 'text')); 

$c->ensureIndex(array('name'=> 1,'desc' => 1),array('unique'=> true));