Division By Zero In Php Error
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Php Division By Zero Exception
or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack perl division by zero Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to suppress the “Division by zero”
Sql Division By Zero
error and set the result to null for the whole application? up vote 6 down vote favorite How to suppress the "Division by zero" error and set the result to null for the whole application? By saying "for the whole application", I mean it is not for a single expression. Instead, whenever a "Division by zero" error occurs, the result is set to null automatically and how to solve division by zero in php no error will be thrown. php share|improve this question edited Sep 16 '10 at 23:58 asked Sep 16 '10 at 23:47 Ethan 9,96082948 If you're looking for c++ operator overloading possibility, so the php doesn't support it, see the discussion here: stackoverflow.com/questions/787692/operator-overloading-in-php –Igor Sep 17 '10 at 0:27 Suppressing errors is generally considered a bad practice. You can use try and catch, but not @. You should write your code in such way that incorrect values are sanitized and no errors or warnings are thrown by standard execution of your code. –Mike Sep 26 '13 at 14:53 in SQL Server, there is a little trick NULLIF() bennadel.com/blog/… –Jaider Apr 29 '14 at 20:24 add a comment| 4 Answers 4 active oldest votes up vote 15 down vote accepted This should do the trick. $a = @(1/0); if(false === $a) { $a = null; } var_dump($a); outputs NULL See the refs here error controls. EDIT function division($a, $b) { $c = @(a/b); if($b === 0) { $c = null; } return $c; } In any place substitute 1/0 by the function call division(1,0). EDIT - Without third variable function division($a, $b) { i
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Php Suppress Division By Zero Warning
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Division By Zero In Wordpress
Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, how to remove warning division by zero in php helping each other. Join them; it only takes a minute: Sign up PHP, How to catch a division by zero? up vote 18 down vote favorite 2 I have a large mathematical expression that has to be created http://stackoverflow.com/questions/3731710/how-to-suppress-the-division-by-zero-error-and-set-the-result-to-null-for-the dynamically. For example, once I have parsed "something" the result will be a string like: "$foo+$bar/$baz";. So, for calculating the result of that expression I'm using the eval function... something like this: eval("\$result = $expresion;"); echo "The result is: $result"; The problem here is that sometimes I get errors that says there was a division by zero, and I don't know how to catch that Exception. I have tried things like: eval("try{\$result = $expresion;}catch(Exception \$e){\$result = http://stackoverflow.com/questions/3071067/php-how-to-catch-a-division-by-zero 0;}"); echo "The result is: $result"; Or: try{ eval("\$result = $expresion;"); } catch(Exception $e){ $result = 0; } echo "The result is: $result"; But it does not work. So, how can I avoid that my application crashes when there is a division by zero? Edit: First, I want to clarify something: the expression is built dynamically, so I can't just eval if the denominator is zero. So... with regards to the Mark Baker's comment, let me give you an example. My parser could build something like this: "$foo + $bar * ( $baz / ( $foz - $bak ) )" The parser build the string step by step without worrying about the value of the vars... so in this case if $foz == $bak there's in fact a division by zero: $baz / ( 0 ). On the other hand as Pete suggested, I tried: But it does not print anything. php exception divide-by-zero share|improve this question edited Mar 13 '14 at 19:01 Eric Leschinski 46.3k23221190 asked Jun 18 '10 at 15:41 Cristian 137k44297236 1 Can you check if $expression is dividing by zero beforehand? –Anthony Forloney Jun 18 '10 at 15:44 @Anthony Forloney: Good question, my answer assumed
field as the user types in. everytime I type an entry on the input field I keep getting an error message: Warning division by Zero in. The culprit in https://www.sitepoint.com/community/t/division-by-zero-problem-in-php/64165 the code is this part: if(strlen($queryString) > 0) { and while ($row = mysql_fetch_array($result)). The php code below is that part that checks that the user types an entry and then performs the look up: Any idea how to solve the issue? thanks in advance 0) { $sql = 'SELECT * FROM my table division by WHERE destination LIKE '%$queryString%' ' ; $result = mysql_query($sql); while ($row = mysql_fetch_array($result)) {