Question

我已经花了很长时间来解决这个问题，而且我不能为我的生活弄清楚。任何帮助将不胜感激！

我有一个字符串数组，我用它来获取信息，即事件的月份隐藏在url（字符串）中，我想循环遍历所有的URL并获得月份，并且其他数据输出并使每个数据片成为它自己的数组。

这里的交易，我可以成功完成两次，但第三次尝试创建阵列时，它会崩溃。

此代码有效：

    $months = array();
    $times = array();

    foreach ($ticketsLinks as $ticketsLink){

        //CREATE VENUE ARRAY

            // Delete all the way up to "-tickets-"
            $findMeA = '-tickets-'; 
            $posA = strpos($ticketsLink, $findMeA);
            $posA = $posA + 9;  
            $venue = substr($ticketsLink, $posA); 

            // Find the first number in the string - delete everything after that.
            $lengthA = strlen($venue);

            $parts = str_split($venue);
            $first_num = -1;
            $num_loc = 0;
            foreach ($parts AS $a_char) {
                    if (is_numeric($a_char)) {
                        $first_num = $num_loc;
                        break;
                    }
                        $num_loc++;
            }
            $posB = -$lengthA + $num_loc - 1;
            $venue = substr($venue, 0, $posB);


            // Replace dashes with spaces. 
            $venue = str_replace("-"," ",$venue);

            //Add value to venue's array
            $venues[] = $venue;

        //  CREATE TIME ARRAY

        $pos = strrpos($ticketsLink, '-');
        $pos = strlen($ticketsLink) - $pos - 1;
        $time = substr($ticketsLink, -$pos);
        $pos = strpos($time, '/');
        $time = substr($time, 0, $pos);
        $times[] = $time;


    }

此代码不会：

$months = array();
    $times = array();
    $years = array();

    foreach ($ticketsLinks as $ticketsLink){

        //CREATE VENUE ARRAY

            // Delete all the way up to "-tickets-"
            $findMeA = '-tickets-'; 
            $posA = strpos($ticketsLink, $findMeA);
            $posA = $posA + 9;  
            $venue = substr($ticketsLink, $posA); 

            // Find the first number in the string - delete everything after that.
            $lengthA = strlen($venue);

            $parts = str_split($venue);
            $first_num = -1;
            $num_loc = 0;
            foreach ($parts AS $a_char) {
                    if (is_numeric($a_char)) {
                        $first_num = $num_loc;
                        break;
                    }
                        $num_loc++;
            }
            $posB = -$lengthA + $num_loc - 1;
            $venue = substr($venue, 0, $posB);


            // Replace dashes with spaces. 
            $venue = str_replace("-"," ",$venue);

            //Add value to venue's array
            $venues[] = $venue;

        //  CREATE TIME ARRAY

        $pos = strrpos($ticketsLink, '-');
        $pos = strlen($ticketsLink) - $pos - 1;
        $time = substr($ticketsLink, -$pos);
        $pos = strpos($time, '/');
        $time = substr($time, 0, $pos);
        $times[] = $time;


        //  CREATE YEAR ARRAY

        $pos = strrpos($ticketsLink, '-');
        $pos = strlen($ticketsLink) - $pos - 1;
        $year = substr($ticketsLink, -$pos);
        $pos = strpos($year, '/');
        $year = substr($year, 0, $pos);
        $years[] = $year;


    }

出于本示例的目的，我保留代码以获取年份字符串和时间字符串完全相同，以表明问题并非如此。我已经浏览了上面的代码并尝试对其进行调试 - 唯一让它不起作用的是当我将year变量推送到years数组时。

---更新包含新信息-----

不幸的是，拆分URL以获取必要的信息是最好的方法 - URL来自CSV提要。

所以，在第一次foreach之后，然后只是为了测试，我在$ years数组中运行一个foreach循环 -

foreach($years as $year){
   echo $year;
 }

最终，$ years数组将传递给mySQL数据库，但就目前而言，我只是想确保我正确处理URL。结果循环看起来像这样：

2014 2015年 2014 2016

相反，我什么都没得到，并且在第一个foreach（我打破网址的地方）之后的所有代码都没有运行。我在底部有一个回声，回声＆＃34;这段代码有效！＆＃34;，当我尝试将值推送到$ years数组时，它不会打印到屏幕上。

PHP - 从另一个数组中的字符串创建数组

0 个答案: