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Home Backend Development PHP Tutorial PHP怎么处理移动端提交的表情字符?

PHP怎么处理移动端提交的表情字符?

Jun 23, 2016 pm 01:48 PM
php character submit expression

现在移动端提供了很多表情,比如百度输入法中的表情。
很多表情在用php获取之后,属于无法识别的内容,在存入mysql的时候,会导致从表情位置开始,后面的内容都会丢失。

比如用户输入:  开始内容 [表情] 结束内容
用php获取,并存入mysql时,只能保存: 开始内容[


有什么办法能够把这些无法识别的表情删除,而不影响后面的内容呢?
比如上面的表情如果无法识别,那也希望能够存入mysql的是:开始内容[]结束内容


回复讨论(解决方案)

需设置 mysql 的字符集为 utf8mb4

如果现在是utf8_general_ci,可以直接修改为utf8mb4吗?
另外,在myphpadmin中,看不到utf8mb4,该怎么修改?

好像是版本不够,貌似要升级到5.5以上,好麻烦啊

不升级也行
入库前
$text = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '@E' . base64_encode($r[0]);}, $text);
出库后
$text = preg_replace_callback('/@E(.{6}==)/', function($r) {return base64_decode($r[1]);}, $text);

不升级也行
入库前
$text = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '@E' . base64_encode($r[0]);}, $text);
出库后
$text = preg_replace_callback('/@E(.{6}==)/', function($r) {return base64_decode($r[1]);}, $text);



谢谢版主,我试一下

不升级也行
入库前
$text = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '@E' . base64_encode($r[0]);}, $text);
出库后
$text = preg_replace_callback('/@E(.{6}==)/', function($r) {return base64_decode($r[1]);}, $text);



不太熟悉正则表达式,用了版主的给的方法,如果我只是想过滤掉这些表情符号,那return就写成  return ‘’;可以吗?
会不会把一些其它的符号给去掉了?

$text = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '';}, $text);

$text = preg_replace_callback('/[\xf0-\xf7].{3}/', function($r) { return '';}, $text);



收到,谢谢版主
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