keywords-lowercasefixable

Ensure that PHP keywords are lowercase

Examples

• Examples of correct code for this rule using default options

Control structure with lowercase keywords

<?php
if(true){
  foreach($element as $key => $value){
    echo "$KEY";
  }
}

for($i = 0; $i < 10; $i++){
	if($i === '5'){
		continue;
	}
	
  echo "$i";
}


if(true){
	echo "true";
} elseif(false){
	echo "false";
} else {
	echo "Neither true nor false";
}

Class and file require

<?php
require("test.php");
require_once("test.php");
include_once("test.php");
include("test.php");

class Base
{
	protected $anonymous;

	public function __construct(){
		$this->anonymous = new class extends ArrayObject
			{
				public function __construct(){
					parent::__construct(['a' => 1, 'b' => 2]);
				}
			};
	}
}

function, global and return keywords

<?php
function test() {
	global $var;
	
	echo "Function keyword is not lowercase";
	
	return $var;
}

Switch control structure

<?php
switch($var):
	case 1:
		echo "1";
		break;
	case 2:
		echo "2";
		break;
	default:
		echo "default";
		break;
endswitch;

While, do while loops

<?php
while ($i <= 10):
    echo $i;
    $i++;
endwhile;

do {
    echo $i;
    $i++;
} while ($i <= 10);

Try catch

<?php
try {
    throw new Exception('Some message');
} catch (Exception $e) {
    echo $e->getMessage();
}

try {
    new className();
} catch(Exception $e){
    echo $e->getMessage();
}

• Examples of incorrect code for this rule using default options

Control structure

<?php
IF(true){
  FOREACH($element as $key => $value){
    ECHO "$KEY";
  }
}

For($i = 0; $i < 10; $i++){
	if($i === '5'){
		CONTINUE;
	}
	
  ECHO "$i";
}


IF(true){
	echo "true";
} ELSEIF(false){
	echo "false";
} ELSE {
	echo "Neither true nor false";
}

Class and file require

<?php
rEQUIRE("test.php");
REQUIRE_ONCE("test.php");
INCLUDE_ONCE("test.php");
INclude("test.php");

class Base
{
	PROTECTED $anonymous;

	PUBLIC FUNCTION __construct(){
		$this->anonymous = new class extends ArrayObject
			{
				public function __construct(){
					parent::__construct(['a' => 1, 'b' => 2]);
				}
			};
	}
	
	FUNCTION __destruct(){
		FOREACH($this->anonymous as $key => $value){
			ECHO "$key => $value";
		}
	}
}

function, global and return keywords

<?php
FunCtion test() {
	Global $var;
	
	echo "Function keyword is not lowercase";
	
	RETURN $var;
}

Switch control structure

<?php
SWITCH($var):
	CASE 1:
		echo "1";
		BREAK;
	CASE 2:
		echo "2";
		BREAK;
	DEFAULT:
		echo "default";
		BREAK;
ENDSWITCH;

While, do while loops

<?php
WHILE ($i <= 10):
    echo $i;
    $i++;
ENDWHILE;

DO {
    echo $i;
    $i++;
} while ($i <= 10);

Try catch

<?php
TRY {
    THROW NEW Exception('Some message');
} CATCH (Exception $e) {
    echo $e->getMessage();
}

try {
    NEW className();
} catch(Exception $e){
    echo $e->getMessage();
}