搜索位置落后于最后 preg_match_all 个结果

Question

我需要最后一场比赛之后的第一个位置。因为我想在 regex_match_all 后面的内容中搜索（在本例中 ,sometingBehind）。

这可能无法（开箱即用）从 preg-match-all

获得

来源

start "settings":{"PlayerData":[{"Name":"m (1196)","Civ":"ptol","Team":0,"AI":f,"c":{"r":21,"g":55,"b":149}},{"Name":"s (898)","Civ":"p","Team":0,"AI":false,"c":{"r":150,"g":20,"b":20}},sometingBehind

我的preg_match_all

    preg_match_all('/Name":"([^"(]+)(?:\((\d*)\))?([^"]*)","Civ":"([^"]+)",.*?"Team":(\d+)/'
        , $file_content
        , $matches
        , PREG_SET_ORDER
        , 0);
    var_dump($matches);

我的 $matches 符合预期（缺少 endPos）

array(2) {
  [0]=>
  array(6) {
    [0]=>
    string(46) "Name":"m (1196)","Civ":"ptol","Team":0"
    [1]=>
    string(10) "m "
    [2]=>
    string(4) "1196"
    [3]=>
    string(0) ""
    [4]=>
    string(4) "ptol"
    [5]=>
    string(1) "0"
  }
  [1]=>
  array(6) {
    [0]=>
    string(40) "Name":"s (898)","Civ":"ptol","Team":0"
    [1]=>
    string(5) "s "
    [2]=>
    string(3) "898"
    [3]=>
    string(0) ""
    [4]=>
    string(4) "ptol"
    [5]=>
    string(1) "0"
  }
}

Answer 1

正在搜索并获取搜索后的内容。

使用PREG_OFFSET_CAPTURE

如果传递此标志，对于每个出现的匹配项，还将返回附加字符串偏移量（以字节为单位）。

使用array_key_last

array_key_last returns 如果数组不为空则数组的最后一个键；否则为 NULL。

需要 (PHP 7 >= 7.3.0, PHP 8)

preg_match_all('/Name":"([^"(]+)(?:\((\d*)\))?([^"]*)","Civ":"([^"]+)",.*?"Team":(\d+)/'
    , $file_content
    , $matches
    , PREG_OFFSET_CAPTURE
    , 0);

$contentBehind = getContentBehind($matches, $file_content);
echo contentBehind; # ,sometingBehind in this example

/**
 * @param $matches
 * @param $file_content
 * using array_key_last (PHP 7 >= 7.3.0, PHP 8)
 * @return string contentBehind
 */
function getContentBehind($matches, $file_content, $maxLength=100){
    $last1ArrayValue = $matches[array_key_last($matches)];
    $last2ArrayValue = $last1ArrayValue[array_key_last($last1ArrayValue)];
    $lastKey = array_key_last($last2ArrayValue);
    $lastPos = $last2ArrayValue[$lastKey];
    $posBehindLastSearch = $lastPos + $last1ArrayValue[array_key_last($last1ArrayValue) - 1][$lastKey - 1];
    $contentBehind = substr($file_content, $posBehindLastSearch, $maxLength);
    return $contentBehind;
}