如何使用PHP检查一个字符串是否有逗号分隔值

Question

I need one help.I need to check two type of string value using PHP. I am explaining one example below.

suppose one variable

$sup_id='4' //(datatype-varchar)

$sup_id='4,5,6' //(datatype-varchar)

in above example i have different value in same variable name.Here how can i check that the same variable has one value or different with comma(,) separated.Please help me.

Answer 1

Can be easily done by strpos

if (strpos($sup_id, ',') !== false) {
  echo "There's a comma in the string...!!!";
}