zcat `ls -t *.gz | head -1` | mysql -uroot -ppassword DB_NAME
The above runs a command ls -t to show files in a directory, order by modification time -t, it then just grabs the first one in the list head -1 i.e. the latest back up file. The output is then piped to mysql where the SQL is ran.
Posted in Tools, nix | No Comments »
Some maybe useful Javascript string manipulation and filtering methods:
// convert Characters
returnString = returnString.replace(/ö/g, 'o');
returnString = returnString.replace(/ç/g, 'c');
returnString = returnString.replace(/ş/g, 's');
returnString = returnString.replace(/ı/g, 'i');
returnString = returnString.replace(/ğ/g, 'g');
returnString = returnString.replace(/ü/g, 'u');
// if there are other invalid chars, convert them into blank spaces
returnString = returnString.replace(/[^a-z0-9\s-]/g, "");
// convert multiple spaces and hyphens into one space
returnString = returnString.replace(/[\s-]+/g, " ");
// trims current string
returnString = returnString.replace(/^\s+|\s+$/g,"");
// cuts string (if too long)
if(returnString.length > maxLength)
returnString = returnString.substring(0,maxLength);
// add hyphens
returnString = returnString.replace(/\s/g, "-");
/**
* Remove all characters that do not fit regex antipattern.
*
* @param string $string
* @param string $antiPattern
**/
function stripInvalidStringChars($string, $antiPattern) {
return preg_replace('/ {2,}/',' ',preg_replace($antiPattern, '', $string));
}
Posted in Javascript | No Comments »
Here’s a nice way to make sure an array of integer values contains elements that are greater than zero.
$array = array(123,32,321,3442,342);
$r = array_filter($array, create_function('$val', 'return (int)$val;'));
if(count($array) != count($r)) {
echo 'not valid';
}else {
echo 'valid';
}
Posted in PHP | No Comments »
The following SQL snippet shows a neat way to do queries when implementing paged results.
I have tested the snippet on MySQL 5 only.
SELECT SQL_COUNT ROWS *, tableName.id, tableName.someCol
FROM tableName
LIMIT 0,25;
Read the rest of this entry »
Posted in MySQL | No Comments »
When converting to boolean, the following values are considered FALSE:
- the boolean FALSE itself
- the integer 0 (zero)
- the float 0.0 (zero)
- the empty string, and the string “0″
- an array with zero elements
- an object with zero member variables (PHP 4 only)
- the special type NULL (including unset variables)
- SimpleXML objects created from empty tags
Every other value is considered TRUE (including any resource).
More information here
Posted in PHP | No Comments »