Function to sort an array according to its keys

Function to sort an array according to its keys which are floats casted as strings.

function sort_string_float($a, $b) {

	$a = (float) $a;
	$b = (float) $b;

	if ($a == $b) {
		return 0;
	}

	return $a < $b ? -1 : 1;

}

// use
uksort($l1_data, 'self::sort_string_float');

Snippet, Bash

Delete Redis Cache

Small bash script to delete redis cache.

 redis-cli KEYS "username*" | while read key; do redis-cli DEL $key; echo $key; done

Snippet, PHP

Check whether value an array is not empty (maybe the better way)

Check whether value an array is not empty.

$arr = ['', 'apple', ''];

if (!empty(array_filter($arr))) {
    // do something
}

Snippet, PHP

Check whether value an array is not empty

Check whether value an array is not empty.

$arr = ['', 'apple', ''];

if (implode('', array_unique($arr)) != '') {
    // do something
}

Snippet, PHP

Check whether haystack ends with needle

Check whether haystack ends with needle.

function ends_with($haystack, $needle) {

	if ($needle === '') {
    	return true;
	}

	return strtolower(substr($haystack, -strlen($needle))) === $needle;

}

Snippet, PHP

Check whether haystack starts with needle

Check whether haystack starts with needle.

function starts_with($haystack, $needle) {
	return $needle === '' || stripos($haystack, $needle) === 0;
}

Snippet, Bash

Reveal your IP address

Run the following command to reveal your IP address.

ifconfig eth0 | grep inet | awk '{ print $2 }'