我有函数替换字符串ex。 :smile:带有图片标签。
function out_emoj($str)
{
$emoj_array = array(
"cry", "grimacing", "joy","smiley","innocent", "wink", "flushed", "slight_smile",
"stuck_out_tongue_winking_eye", "relaxed", "crab","cat","expressionless", "pig", "rose", "cherry_blossom",
"sunny", "cloud_snow", "coffee","tea","grin", "ring", "crown", "nerd",
"heart_eyes", "kissing_heart", "sunglasses","scream","rage","disappointed","fearful","confused",
"dizzy_face", "zipper_mouth", "thermometer_face","sleeping","ghost","smiley_cat","smile_cat","joy_cat",
"heart_eyes_cat", "smirk_cat", "kissing_cat","scream_cat","crying_cat_face","pouting_cat","thumbsup","thumbsdown",
"angel", "dancer", "kimono","heart","purple_heart","sparkling_heart","heart_decoration","snowflake",
);
return preg_replace("/:(.*?):/", " <img width='22' src='".base_url('assets/img/emojiones/$1.png')."' alt='$1'> ", $str);
}
我想检查匹配字符串是否在数组中,然后替换else skip。 例如:如果用户输入:notfound:function将添加带有不存在的图像的标签。我想检查一下&#34; notfound&#34;先排在阵列中。
答案 0 :(得分:1)
Prince Actarus,您可以将preg_replace_callback
添加到您的golgot武器中:
return preg_replace_callback("/:(.*?):/", function ($m) use ($emoj_array) {
if (in_array($m[1], $emoj_array))
return ' <img width="22" src="' . base_url('assets/img/emojiones/' . $m[1] . '.png') . '" alt="' . $m[1] . '"> ';
return $m[0];
}, $str);
另一种方法是构建一个映射原始数组的模式数组并使用preg_replace
,但效率较低,因为每个模式都会解析一次字符串。
其他方式:建立替代方案:
$pattern = '/:(' . implode('|', $emoj_array) . '):/';
return preg_replace($pattern, ' <img width="22" src="' . base_url('assets/img/emojiones') . '/$1.png" alt="$1"> ', $str);
答案 1 :(得分:0)
function out_emoj($str)
{
$emoj_array = array(
"cry", "grimacing", "joy","smiley","innocent", "wink", "flushed", "slight_smile",
"stuck_out_tongue_winking_eye", "relaxed", "crab","cat","expressionless", "pig", "rose", "cherry_blossom",
"sunny", "cloud_snow", "coffee","tea","grin", "ring", "crown", "nerd",
"heart_eyes", "kissing_heart", "sunglasses","scream","rage","disappointed","fearful","confused",
"dizzy_face", "zipper_mouth", "thermometer_face","sleeping","ghost","smiley_cat","smile_cat","joy_cat",
"heart_eyes_cat", "smirk_cat", "kissing_cat","scream_cat","crying_cat_face","pouting_cat","thumbsup","thumbsdown",
"angel", "dancer", "kimono","heart","purple_heart","sparkling_heart","heart_decoration","snowflake",
);
return preg_replace_callback("/:(.*?):/",
function($m) use ($emoj_array)
{
if (in_array($m[1],$emoj_array))
{
return " <img width='22' src='".base_url('assets/img/emojiones/'.$m[1].'.png')."' alt='{$m[1]}'> ";
}
else
{
return ':'.$m[1].':';
}
}
, $str);
}
谢谢@Casimir et Hippolyte和@ rizier123这里是我的解决方案