PHP function algorithm for converting numbers to Chinese characters

/***********************Convert numbers to Chinese characters***********************/

function del0($num) //Remove the 0 in front of the number field

{

Return "".intval($num);

}

function n2c($x) //Change a single number into a Chinese character

{

​ $arr_n = array("zero","one","two","three","four","five", "Six","Seven","Eight","Nine","Ten");

Return $arr_n[$x];

}

function num_r($abcd) //Read value (4 digits)

{

$arr= array();

$str = ""; //The Chinese character value after reading

$flag = 0; //Whether the bit is zero

$flag_end = 1; //Whether it ends with "zero"

$size_r = strlen($abcd);

for($i=0; $i<$size_r; $i++)

{

$arr[$i ] = $abcd{$i};

}

$arrlen = count($arr);

for($j=0; $j<$arrlen; $j++)

{

$ch = n2c ($arr[$arrlen-1-$j]); //Convert Chinese characters from back to front

//echo $ch;

//echo "
";

if($ch == "Zero" && $flag == 0){ //If it is the first zero

            $flag = 1; //This bit is zero

                $str = $ch.$str; //Add Chinese character numerical string

                                                                                                                                        zero

switch " Ten".$str; break; //The second digit

                  case 2: $str = $ch. "hundred".$str; break; //       The third digit

                                                                                      Thousands".$str; break; //The fourth digit

                                                                                                                                     ;

                    $str = mb_substr($str, 0, mb_strlen($str)-1); //Remove "zero"

     }

if($arrlen == 2 && $arr[0] == 1 ){

$str = substr($str,2);

}

Return $str;

}

$wsbq = substr($num_real, -8, 4);

$gsbq = substr($num_real, -4);

$a = num_r(del0($gsbq));

$b = num_r(del0 ($wsbq))."万";

            $c = num_r(del0($y))." 100 million";

  }elseif($numlen <= 8 && $numlen >= 5) //If Greater than or equal to "10,000"

                                                                                                                                                                                                                    gsbq));

$b = num_r(del0($wsbq))."万";

$c="";

}elseif($numlen <= 4) //If less than or equal to "thousand"

                                                                                                                                                                                          $gsbq = substr($num_real, -$numlen); }

$ch_num = $c.$b.$a;

return $ch_num;

}

/******************End of converting numbers to Chinese characters***********************/