Something like this:

code:

$line="a1a;20342;anna ardts"

$class=substr($line,1,instr($line,";")-1)
$rest=substr($line,instr($line,";")+1,len($line))

$nr=substr($rest,1,instr($rest,";")-1)
$name=substr($rest,instr($rest,";")+1,len($rest))

? $class
? $nr
? $name


HTH

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The Code is out there