invoicepdf.tpl not accept function

[Morteza]

Dear

 

I want to add below functions into invoicepdf.tpl :

function formatPageNumber($num) {
$strnum = strval($num);
$strnum = preg_replace_callback("/[0-9]/", create_function('$matches', '
$numarr = array("۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹");
return $numarr[intval($matches[0])];'), $strnum);
return $strnum;
}
function formatDate($date) {
$strdate = explode('/',$date);
$strdate = formatPageNumber(gregorian_to_jalali($strdate[0],$strdate[1],$strdate[2],'/'));
return $strdate;
}

function gregorian_to_jalali($g_y,$g_m,$g_d,$mod=''){
$g_y=tr_num($g_y); $g_m=tr_num($g_m); $g_d=tr_num($g_d);/* <= :اين سطر ، جزء تابع اصلي نيست */
$d_4=$g_y%4;
$g_a=array(0,0,31,59,90,120,151,181,212,243,273,304,334);
$doy_g=$g_a[(int)$g_m]+$g_d;
if($d_4==0 and $g_m>2)$doy_g++;
$d_33=(int)((($g_y-16)%132)*.0305);
$a=($d_33==3 or $d_33<($d_4-1) or $d_4==0)?286:287;
$b=(($d_33==1 or $d_33==2) and ($d_33==$d_4 or $d_4==1))?78:(($d_33==3 and $d_4==0)?80:79);
if((int)(($g_y-10)/63)==30){$a--;$b++;}
if($doy_g>$b){
 $jy=$g_y-621; $doy_j=$doy_g-$b;
}else{
 $jy=$g_y-622; $doy_j=$doy_g+$a;
}
if($doy_j<187){
 $jm=(int)(($doy_j-1)/31); $jd=$doy_j-(31*$jm++);
}else{
 $jm=(int)(($doy_j-187)/30); $jd=$doy_j-186-($jm*30); $jm+=7;
}
return($mod=='')?array($jy,$jm,$jd):$jy.$mod.$jm.$mod.$jd;
}

 

When I add them, cron job stop working but invoice create in new order or I can send email with Admin Area.

 

What should I Do?

 

Best Rigards,

Morteza