I want to keep only numbers and remove all characters from a variable.
For example:
input: +012-(34).56.(ASD)+:"{}|78*9
output: 0123456789
I want to keep only numbers and remove all characters from a variable.
For example:
input: +012-(34).56.(ASD)+:"{}|78*9
output: 0123456789
This is how to do that generically:
$numbers = preg_replace('/[^0-9]+/', '', '+012-(34).56.(ASD)+:"{}|78*9');
echo $numbers;
Output:
0123456789
With Zend_Filter_Digits
Returns the string $value, removing all but digit characters.
Example with static call through Zend_Filter:
echo Zend_Filter::filterStatic('abc-123-def-456', 'Digits'); // 123456
Example with Digits instance
$digits = new Zend_Filter_Digits;
echo $digits->filter('abc-123-def-456'); // 123456;
Internally, the filter will use preg_replace
to process the input string. Depending on if the Regex Engine is compiled with UTF8 and Unicode enabled, one of these patterns will be used:
[^0-9]
- Filter if Unicode is disabled[^[:digit:]]
- Filter for the value with mbstring[\p{^N}]
- Filter for the value without mbstringSee http://framework.zend.com/svn/framework/standard/trunk/library/Zend/Filter/Digits.php