Detect leap year for gregorian and shamsi date.
function gLeapYear($year) { if (($year % 4 == 0) and (($year % 100 != 0) or ($year % 400 == 0))) return true; else return false; } function sLeapYear($year) { $ary = array(1, 5, 9, 13, 17, 22, 26, 30); $b = $year % 33; if (in_array($b, $ary)) return true; return false; } echo sLeapYear(1392).' '; echo gLeapYear(2013);
If file exists then delete the file. function delFile( $file_name ) { if ( file_exists( $file_name ) ) // Does '$file_name' exist { unlink( $file_name ); return true; } ...
The best way to determine the character count of a UTF8 string. function strlen_utf8( $str ) { return mb_strlen( $str, 'UTF-8' ); } //or... function strlen_utf8( $str ) { $c = 0;...
Create directory if not exists. function createDir( $dir ) { if ( !is_dir( $dir ) ) { mkdir( $dir, 0777 ); return true; } return false; }...
If you have a list of items (for example)......
