function chr_ascii($a){

$a=str_replace("CHR(58)",":",$a);
$a=str_replace("CHR(59)",";",$a);
$a=str_replace("CHR(60)","<",$a);
$a=str_replace("CHR(61)","=",$a);
$a=str_replace("CHR(62)",">",$a);
$a=str_replace("CHR(63)","?",$a);
$a=str_replace("CHR(64)","@",$a);
$a=str_replace("CHR(95)" ,"_",$a);
$a=str_replace("CHR(97)","a",$a);
$a=str_replace("CHR(98)","b",$a);
$a=str_replace("CHR(99)","c",$a);
$a=str_replace("CHR(100)","d",$a);
$a=str_replace("CHR(101)","e",$a);
$a=str_replace("CHR(102)","f",$a);
$a=str_replace("CHR(103)","g",$a);
$a=str_replace("CHR(104)","h",$a);
$a=str_replace("CHR(105)","i",$a);
$a=str_replace("CHR(106)","j",$a);
$a=str_replace("CHR(107)","k",$a);
$a=str_replace("CHR(108)","l",$a);
$a=str_replace("CHR(109)","m",$a);
$a=str_replace("CHR(110)","n",$a);
$a=str_replace("CHR(111)","o",$a);
$a=str_replace("CHR(112)","p",$a);
$a=str_replace("CHR(113)","q",$a);
$a=str_replace("CHR(114)","r",$a);
$a=str_replace("CHR(115)","s",$a);
$a=str_replace("CHR(116)","t",$a);
$a=str_replace("CHR(117)","u",$a);
$a=str_replace("CHR(118)","v",$a);
$a=str_replace("CHR(119)","w",$a);
$a=str_replace("CHR(120)","x",$a);
$a=str_replace("CHR(121)","y",$a);
$a=str_replace("CHR(122)","z",$a);
 return $a;

}