php添加单词而不重复字符串中的随机位置

Question

I have a string and key words array like this.

$string = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa";

$keywordsArr = array('FOOO' => 3,'BAR' => 2);

So I need to put these keywords into the string with number of times according to the key words array as following. And without repeating these key words.

$string = "Lorem ipsum dolor FOOO sit amet, consectetuer adipiscing BAR elit. Aenean commodo FOOO ligula eget dolor. Aenean FOOO massa BAR";
// 3 times FOOO and 2 times BAR

Without repeating like this.

$string = "Lorem ipsum dolor FOOO FOOO FOOO sit amet, consectetuer adipiscing BAR BAR elit. Aenean commodo ligula eget dolor. Aenean massa";

Anyone can help me? Really appreciate it. Thanks

Answer 1

    $string = "Lorem ipsum FOO dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis";
$keywordsArr = array('FOO' => 4, 'BAR' => 2);
$sResult = addWordToString($string, $keywordsArr);


function addWordToString($string, $keywordsArr) {

    $dStringLength = strlen($string);
    //converting the string into an array depending on the spaces
    $aStringContent = explode(' ', $string);
    $dLength = count($aStringContent);
    //loop the keyword array
    foreach ($keywordsArr as $key => $value) {
        //check if the word occured the number times of value
        $sRegularExperssion = "/$key/";
        $dNumberOfMatches = preg_match($sRegularExperssion, $string);
        if ($dNumberOfMatches >= $value) {
            echo "you are done, the word $key already exist $dNumberOfMatches times";
        } else if ($dNumberOfMatches >= 0) {
            $dRemainingTimes = $value - $dNumberOfMatches;

            $dStep = (int) ($dLength / $dRemainingTimes);

            for ($dIndex = 0; $dIndex < $dRemainingTimes; $dIndex++) {
                $dPosition = $dStep * $dIndex;
                array_splice($aStringContent, $dPosition, 0, $key);
            }


        }
    }
    $sResult = implode(' ', $aStringContent);

    return $sResult;
}