php根据指定位置和长度获得子字符串的方法

<"beginning";
print("Position counted from left: ".substr($string,0,5)."\n");
print("Position counted form right: ".substr($string,-7,3)."\n");
"htmlcode">

Position counted from left: begin
Position counted form right: gin


希望本文所述对大家的php程序设计有所帮助。