php - shell script - how to split a string with delimiter ","

i have a shell script which call by php and pass a variable ($1)

When i using MYVAR = $1, and echo MYVAR is not working

how can i assign this variable ($1) to another variable and split it with delimiter "," and convert it into a array for looping?

Answer

Well, guessed answer in absence of code.

Variable assignments in shell scripts must be:

  MYVAR=$1

Spaces around are incorrect:

  MYVAR = $1

And the echo must output an actual variable, using the $ prefix:

  echo $MYVAR

Not just the literal string:

  echo NOVAR