Christmas tree without loops in PHP only 109 characters

113 chars:

$s=10;$r=range(1,$s);array_walk($r,function($v)use($s){echo str_repeat(' ',$s-$v).str_repeat('+',$v*2-1)."\n";});

109 chars:

$s=10;$r=range(1,$s);array_walk($r,function($v)use($s){printf('%'.($s+$v-1)."s\n",str_repeat('+',$v*2-1));});

125 chars:

$s=10;$r=range(1,$s);array_walk($r,function($v)use($s){echo str_pad(str_repeat('+',$v*2-1),$s+$v-1,' ',STR_PAD_LEFT)."\n";});

Result:

         +
        +++
       +++++
      +++++++
     +++++++++
    +++++++++++
   +++++++++++++
  +++++++++++++++
 +++++++++++++++++
+++++++++++++++++++