Question

我正在尝试使用php函数解析一个字符串，它将为bbcode样式回显一个<img>标记：smiley：string。

它确实工作只解析找到的第一个项目，然后停止循环。我需要它来解析整个文本然后返回它。

我尝试了以下内容：

function parse_emoji($string){
$possibleCodes = array('+1','-1','angry','anguished','astonished','bawling','bleep_bloop','blush','cold_swaet','confounded','confused','cookie','cry','dissapointed','dissapointed_relieved','dizzy','expressionless','fearfull','flushed','frown','grey_question','grimace','grin','heart','heartbreak','hushed','innocent','joy','kiss','kissing_blush','kissing_closed_eyes','kissing_smiling_eyes','kissing_wink','lol','love','love','mask','mrgreen','naughty','neutral','no_mouth','open_mouth','pensive','persevere','rage','relaxed','relieved','scream','skull','sleeping','sleepy','smile','smiley','smirk','star','tongue_grin','tongue_wink','triumph','trollface','unamused','warning','weary','wink','worried','yum');
foreach($possibleCodes as $code) {
  return str_replace(':'.$code.':', "<img class='smiley' src='".asset_url()."img/emoticons/".$code.".png'>", $string);
}

}

如果我然后解析$ string（'这是一个笑脸：微笑：这个也是：微笑：'）它将为第一个标签插入一个图像但是将回显普通：笑脸：为第二个。

Answer 1

这是因为你在foreach中返回了一个结果。它将停止循环并在仅发生一次循环后返回结果。

您应该删除foreach语句中的返回值：

--debug

Answer 2

因为你在第一次替换后返回....循环所有单独的替换，然后才返回

function parse_emoji($string){
    $possibleCodes = array('+1','-1','angry','anguished','astonished','bawling','bleep_bloop','blush','cold_swaet','confounded','confused','cookie','cry','dissapointed','dissapointed_relieved','dizzy','expressionless','fearfull','flushed','frown','grey_question','grimace','grin','heart','heartbreak','hushed','innocent','joy','kiss','kissing_blush','kissing_closed_eyes','kissing_smiling_eyes','kissing_wink','lol','love','love','mask','mrgreen','naughty','neutral','no_mouth','open_mouth','pensive','persevere','rage','relaxed','relieved','scream','skull','sleeping','sleepy','smile','smiley','smirk','star','tongue_grin','tongue_wink','triumph','trollface','unamused','warning','weary','wink','worried','yum');
    foreach($possibleCodes as $code) {
        $string = str_replace(':'.$code.':', "<img class='smiley' src='".asset_url()."img/emoticons/".$code.".png'>", $string);
    }
    return $string;
}

循环中的PHP str_replace（）只替换一个项目

2 个答案: