How to convert a negative number to positive Number in PHP

Question: How to convert a negative number to positive Number in PHP?

$converToPostive= abs(-10.2); // 10.2 
$converToPostive=abs(10.2);   //10.2

(If number is already POSITIVE, It will remain the POSITIVE)


Question: How to convert a Positive Number to Negative Number in PHP?

$converToNegative =-1 * abs(10.2); //-10.2
$converToNegative =-1 * abs(-10.2); //-10.2

(If number is already NEGATIVE, It will remain the NEGATIVE)


Question: How to convert a negative number to positive Number and Vice Versa?

echo -1 * -10.2 //10.2
echo -1 * 10.2; //-10.2

(If number is NEGATIVE then convert to POSITIVE else if number is POSITIVE then convert to NEGATIVE)


Question: How to remove the decimal part from number?

$no=10.2
$noArray = explode('.',$no);
$no=$noArray[0]; //10

$no=-10.2;
$noArray = explode('.',$no);
echo $no=$noArray[0]; //-10

(just Remove the decimal part)


Question: How to get next highest integer value by rounding up?

echo ceil(10.2);    // 11
echo ceil(10.2222);  // 11
echo ceil(-10.22);  // -10

(Remove the decimal part and get next Highest Integer number)


Question: How to get next lowest integer value by rounding down?

echo floor(10.2);    // 11
echo floor(10.2222);  // 11
echo floor(-10.22);  // -10

(Remove the decimal part and get next lowest Integer number)


Question: How to rounding off a number?

echo round(10.4);  // 10
echo round(10.5);  // -11
echo round(10.6);  // -12

(Just rounding off the number)

Best Related Posts are Following:

1. PHP 7 new features.
2. What is session_set_cookie_params.
3. imagecreatefrompng - Create a new image from file or URL - PHP.
4. count_chars - Count Number of character of string with PHP.
5. Check if string contains specific words - PHP.
6. New features of PHP 5.5 with Examples.
7. New features of PHP 5.4 with Examples.
8. How To Track the Real IP Address Behind the Proxy - PHP - REMOTE_ADDR.
9. date_sunrise - Returns time of sunrise for a given day and location.
10. Convert image to Binary Data and vice versa in PHP.
11. Difference between in_array and array_key_exists in php with Example.
12. get_class_vars PHP Function.
13. get_class_methods PHP Function.
14. mysql_fetch_field - Get column information from a result.
15. PHP mktime() Function - Get Unix timestamp for a date.
16. Strtolower - Returns string with all alphabetic characters converted to lowercase.
17. PHP file_get_contents Function - Reads entire file into a string.
18. PHP utf8_encode Function - Encodes an ISO-8859-1 string to UTF-8.
19. com_create_guid Generate a globally unique identifier.
20. spl_autoload What is spl_autoload function in php.
21. parse_ini_string - Parse a configuration string.
22. stream_socket_client - Open Internet or Unix domain socket connection.
23. imagecopyresampled-Copy and resize part of an image with resampling.
24. What is proc_close.
25. What is str_getcsv.
26. spl autoload extensions in PHP.
27. Parse a binary IPTC block into single tags.
28. Perform a regular expression search and replace.
29. fputcsv - Write in CSV File with PHP.
30. realpath - Get the Real path of File with PHP.
31. ob_get_level -Return the nesting level of the output buffering mechanism.
32. openssl decrypt - Decrypts data.
33. Domain Name Server.
34. iterator_apply - Call a function for every element in an iterator - PHP.
35. openssl private encrypt.
36. openssl_pkcs12_read.
37. mb_check_encoding.
38. imagegrabwindow.
39. imagealphablending - Set the blending mode for an image.
40. Gets options from the command line argument list.