Address lookup, UK postcode validation, UK geocoding and email validation integration for Slack.

slack_slash_command.php

<?php

	// Token from slack slash command set up
	$token = "YOUR TOKEN";

	// API key for PostCoder Web
	// Sign up for your API Key at www.alliescomputing.com/postcoder/sign-up 
	// or use PCW45-12345-12345-1234X, which works with the postcode NR14 7PZ only
	$key = "API KEY HERE";

	// check to ensure POST is being used
	if (isset($_SERVER['REQUEST_METHOD']) and $_SERVER['REQUEST_METHOD'] == 'POST') {
	
		// check that supplied token matches
		if ($_POST['token'] == $token) {
			
			// make sure command variable not blank
			if (trim($_POST['text'])) {
			
				// if text starts with geo run geocoding
				if (strpos(trim($_POST['text']), 'geo', 0) !== false) {
				
					// remove sub command
					$geo_search = str_replace("geo", "", $_POST['text']);
		
					// build PostCoder Web url
					$url = "http://ws.postcoder.com/pcw/".$key."/position/uk/".rawurlencode(trim($geo_search))."?format=json";
			
					// get response from PostCoder Web
					$response = json_decode(file_get_contents($url));			

					// Check if response has results
					if (count($response) > 0) {
			
						// Merge all results lat,long into one message
						$str = "";
				
						foreach ($response as $item) {
				
							$str .= $item->latitude . "," . $item->longitude . "\n";
				
						}
				
						// Output message
						echo trim($str, "\n");
			
					} else {
				
						// Output error if not results
						echo "Postcode not found";
				
					}
			
				// if text starts with valid run validate postcode
				} else if (strpos(trim($_POST['text']), 'valid', 0) !== false) {
				
					// remove sub command
					$valid_search = str_replace("valid", "", $_POST['text']);
		
					// build PostCoder Web url
					$url = "http://ws.postcoder.com/pcw/".$key."/codepoint/validatepostcode/".rawurlencode(trim($valid_search))."?format=json";
			
					// get response from PostCoder Web
					$response = json_decode(file_get_contents($url));			

					// Check if response is true
					if ($response) {
			
						echo "Postcode is valid";
			
					} else {
					
						echo "Postcode is not valid";
				
					}
			
				// if text starts with email run validate email
				} else if (strpos(trim($_POST['text']), 'email', 0) !== false) {
				
					// remove sub command
					$email_search = str_replace("email", "", $_POST['text']);
		
					// build PostCoder Web url
					$url = "http://ws.postcoder.com/pcw/".$key."/email/".rawurlencode(trim($email_search))."?format=json";
			
					// get response from PostCoder Web
					$response = json_decode(file_get_contents($url));			

					// Check if response has results
					if ($response) {
			
						if ($response->valid) {						
							echo "Email is valid";
						} else {
							echo "Email is not valid";
						}
						
						if ($response->warning) {
							echo "\n" . $response->warning;
						}
			
					} else {
				
						// Output error if not results
						echo "Error occurred";
				
					}
				
				// default to street postcode lookup
				} else {
		
					// build PostCoder Web url
					$url = "http://ws.postcoder.com/pcw/".$key."/street/uk/".rawurlencode(trim($_POST['text']))."?format=json";
			
					// get response from PostCoder Web
					$response = json_decode(file_get_contents($url));			

					// Check if response has results
					if (count($response) > 0) {
			
						// Merge all results summarylines into one message
						$str = "";
				
						foreach ($response as $item) {
				
							$str .= $item->summaryline . "\n";
				
						}
				
						// Output message
						echo trim($str, "\n");
			
					} else {
				
						// Output error if not results
						echo "Postcode not found";
				
					}
					
				}
					
			}
		
		}	
	}
 
?>