PHP Predis : how to get/delete keys containing special characters?

Question

我需要删除一个包含一些特殊键的键(在我的例子中是方括号):

我做了以下，但它不起作用:

$this->redis;    
$keys = $this->redis->keys("*");
foreach ($keys as $key) {

    // keys are in the following format:   
    //    vir3_data_cache[zones_cdc_shifting_series_2013_5][1]

    $this->redis->del($key);
    // no key was deleted
}

我也尝试引用 key ，但没有成功:

$this->redis;    
$keys = $this->redis->keys("*");
foreach ($keys as $key) {

    // keys are in the following format:   
    //    vir3_data_cache[zones_cdc_shifting_series_2013_5][1]

    $quotedKey = addslashes(addslashes($key));
    $this->redis->del($quotedKey);
    // no key was deleted
}

Answer 1

已解决。问题与以下事实有关:predis 在执行任何操作之前会在每个键的开头自动插入一个已配置的前缀(在我的例子中为“vir3_data_cache”)。但是 keys("*") 命令不会去掉键的前缀。

所以我需要执行以下操作才能使我的代码正常工作:

$prefix = $this->redis->getOptions()->__get('prefix')->getPrefix();

$keys = $this->redis->keys("*");
$removed = 0;
foreach ($keys as $key) {
    if (substr($key, 0, strlen($prefix)) == $prefix) {
        $key = substr($key, strlen($prefix));
    }              
}