php - Update mysql but only last digit of number -


i updating database number, want last digit of number update. not sure whether in php or mysql.

code: (not full code posted, relevant)

if(isset($_post['update'])) {  $n_score = $_post['n_score']; $a_score = $_post['a_score'];  $sql = "update scores set n_score = $n_score, a_score = $a_score"; mysql_query($sql) or die(mysql_error());  <form method = "post" action = "<?php $_php_self ?>"> <table width = "400" border =" 0" cellspacing = "1" cellpadding = "2">   <tr> <td width = "10"><?php echo $n_team; ?> score:</td> <td><input name = "n_score" type = "text" id = "n_score" value="<?php echo $n_score; ?>"></td> </tr>  <tr> <td width = "10"><?php echo $a_team; ?> score:</td> <td><input name = "a_score" type = "text" id = "a_score" value="<?php echo $a_score; ?>"></td> </tr>

so, in form, enter score n_team , a_team so:

n_team: 21 & a_team: 34

i want last digit go in update of sql string, in database so:

n_team: 1 & a_team: 4

try:

$n_score = substr($_post['n_score'], -1); $a_score = substr($_post['a_score'], -1);

this assumes values non-zero length, might want error handling.

you may want think protecting sql injection.


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