php中数字货币类型验证函数

文章都是自定的一些数字货币验证函数，有需要可以参考一下。

<script>ec(2);</script>

代码如下

复制代码

function is_number( $str ) {         if ( substr( $str, 0, 1 ) == "-" )         {                 $str = substr( $str, 1 );         }         $length = strlen( $str );         $i = 0;         for ( ;    $i         {                 $ascii_value = ord( substr( $str, $i, 1 ) );                 if ( 48                 {                         continue;                 }                 return FALSE;         }         if ( $str != "0" )         {                 $str = intval( $str );                 if ( $str == 0 )                 {                         return FALSE;                 }         }         return TRUE; } function is_decimal( $str ) {         if ( substr( $str, 0, 1 ) == "-" )         {                 $str = substr( $str, 1 );         }         $length = strlen( $str );         $i = 0;         for ( ;    $i         {                 $ascii_value = ord( substr( $str, $i, 1 ) );                 if ( 0                 {                         continue;                 }                 return FALSE;         }         return TRUE; } function is_money( $str ) {         $dot_pos = strpos( $str, "." );         if ( !$dot_pos )         {                 return FALSE;         }         $str1 = substr( $str, 0, $dot_pos );         if ( 14         {                 return FALSE;         }         if ( !is_number( $str1 ) )         {                 return FALSE;         }         $str2 = substr( $str, $dot_pos + 1, strlen( $str ) - $dot_pos );         if ( strlen( $str2 ) != 2 )         {                 return FALSE;         }         if ( !is_number( $str2 ) )         {                 return FALSE;         }         return TRUE; } function is_money_len( $str, $int_len, $dot_len ) {         $dot_pos = strpos( $str, "." );         if ( !$dot_pos )         {                 return FALSE;         }         $str1 = substr( $str, 0, $dot_pos );         if ( $int_len         {                 return FALSE;         }         if ( !is_number( $str1 ) )         {                 return FALSE;         }         $str2 = substr( $str, $dot_pos + 1, strlen( $str ) - $dot_pos );         if ( strlen( $str2 ) != $dot_len )         {                 return FALSE;         }         if ( !is_number( $str2 ) )         {                 return FALSE;         }         return TRUE; }