将 PHP 中的输入字符串拆分为多个部分而不打断单词

Question

已设法获取一个输入字符串并将其分成两部分并将其写入 2 个文件。我现在想要实现的是当它大于我的限制时能够将它分成 3 甚至 4 个部分并将该数据写入单独的文件而不破坏输入。

这是我在这个问题上找到的到目前为止所管理的内容：Split Strings in Half (Word-Aware) with PHP

public function createfiles(array $lines)
{
    $File1  = __DIR__ . '/file1.txt';
    $File2  = __DIR__ . '/file2.txt';

    $regexLines = [];

    foreach ($lines as $line) {
        $regexLines[] = preg_quote($line);
    }
    $data = implode('|', $regexLines);

    //current data input is 18000
    $myLimit = 10000;

    $dataLength = strlen($data);

    if ($dataLength > $myLimit) {

        $middle = strrpos(substr($data, 0, floor($dataLength / 2)), '/') + 1;
        //now want to split into four parts if input data is for instance 35000 characters

        // Strip off trailing /
        $data1 = substr($data, 0, $middle-1);
        $data2 = substr($data, $middle);
        //now want a $data3 and $data4 also stripping off a trailing /

        $this->writeToFile($File1, $data1);
        $this->writeToFile($File2, $data2);
        //now want to write to $File3 and $File4 if needed

    } else {
        $this->writeToFile($File1, $data);
    };
}

Answer 1

经过数小时的挖掘和摆弄，终于找到了解决方案。我向它扔了一个大清单，它为我把它很好地分成了 7 个文件，而没有把单词分成两半。

public function createmultiplefiles(array $lines)
{
    $regexLines = [];

    foreach ($lines as $line) {
        $regexLines[] = preg_quote($line);
    }
    $data = implode('|', $regexLines);

    $mylimit = 10000;
    $datalength = strlen($data);
    $lastpos = 0;

    for ($x = 1; $lastpos < $datalength; $x++) {

        if( ($datalength-$lastpos) >= $mylimit){
            $pipepos = strrpos(substr($data, $lastpos, $mylimit), '|');
            $splitdata = substr($data, $lastpos, $pipepos);
            $lastpos = $lastpos + $pipepos+1;
        }else{
            $splitdata = substr($data, $lastpos);
            $lastpos = $datalength;
        }
        $file = __DIR__ . 'myfile-' . $x . '.txt';
        $this->writeToFile($file, $splitdata);
    }
}

将 PHP 中的输入字符串拆分为多个部分而不打断单词

Split input string in PHP into multiple parts without breaking words

php

split

substr