php 字符串操作

php 字符串操作

去掉尖括号及之间的内容

preg_replace('/\<.*?\>/', '',$str);

去掉横杆/空格/冒号等

str_replace("-","",$str);
str_replace(" ","",$str);
str_replace(":","",$str);

去掉前几位、后几位

substr($str,5);
substr($str,-5);

获取 .mp3

strrchr("333.mp3",".");

去掉文件名后缀

str_replace(strrchr("333.mp3","."),"","333.mp3");