PHP: How to calculate signed area of a Polygon
Calculating the signed area for an polygon can be found when you know the coordinates of the vertices. We offer 3 methods below: Method 1:…
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PHP: detect Point in Polygon
PHP function to detect Point in Polygon: Test for convex polygon: Result: IN OUT Test for concave polygon: Result: OUT IN OUT Note: we only…
PHP: Calculate Distance Between Two Coordinates
This routine calculates the distance between two points (given the latitude/longitude of those points). It is being used to calculate the distance between two locations:…
PHP: calculate percentage of CPU load
Read first: Function sys_getloadavg in PHP < 5.1.3 This function can calculate percentage of CPU load, work done with LINUX and WINDOWS OS. Usage: Online…
PHP function: get US state abbreviation from state name
In the previous tutorial PHP function: get US state name by abbreviation, we can get US state name by abbreviation. Now, we try to get…
PHP function: get US state name by abbreviation
This is a state list I made for a website. I kept it just in case i ever needed it again, which i have. I…
PHP: Convert IP Range to CIDR
Read first: PHP: Convert CIDR to ipaddress range PHP: check valid ipaddress or CIDR notation range This function work done with small IP range ex:…
PHP: check valid ipaddress or CIDR notation range
This function checks for a valid IP address or CIDR notation address range. Example of usage:
PHP: Convert CIDR to ipaddress range
This function takes an IP address and CIDR netmask (e.g. 102.68.1.0/25), and calculate IP address range in that netblock. Example: result: array(2) { [0]=> string(10)…
PHP: Convert Hex Color to RGB, RGB to Hex Color
Example 1: result: Array ( [red] => 0 [green] => 255 [blue] => 103 ) Example 2: result: 0,255,103 Example 3: result: 34,255,102 Example 4:…