String Single Quoted Double Quoted Heredoc Syntax Nowdoc Syntax Single Quoted Literal var_dump('l'); //=> string(1) "l" var_dump('lorem ipsum'); //=> string(11) "lorem ipsum" String Multiline var_dump('lorem ipsum'); //=> // string(11) "lorem // ipsum" Escape Sequences $variable = 'lorem' ipsum'; var_dump($variable); //=> string(12) "lorem' ipsum" $variable = 'lorem \' ipsum'; var_dump($variable); //=> string(14) "lorem ' ipsum" $variable = 'lorem \n ipsum'; var_dump($variable); //=> string(14) "lorem \n ipsum" echo $variable; //=> lorem \n ipsum Double Quoted Literal var_dump("lorem ipsum"); //=> string(11) "lorem ipsum" Escape Sequences var_dump("lorem\nipsum"); //=> // string(13) "lorem // ipsum" Variable parsing $name = 'Alice'; var_dump('Hello $name'); //=> string(11) "Hello $name" $name = 'Alice'; var_dump("Hello $name"); //=> string(11) "Hello Alice" $name = 'Alice'; var_dump("Hello {$name}!"); //=> string(12) "Hello Alice!" $name = ['name' => 'Alice']; var_dump("Hello {$name['name']}"); //=> string(11) "Hello Alice" $number = 10; var_dump("result: {$number+1}"); //=> Parse error: syntax error, unexpected '+', expecting :: (T_PAAMAYIM_NEKUDOTAYIM) Heredoc Syntax Literal $variable = <<<EOD lorem ipsum EOD;
var_dump($variable); //=> // string(11) "lorem // ipsum" Escape Sequences $variable = "lorem \tipsum";
var_dump($variable); //=> // string(12) "lorem // ipsum" $name = 'Alice';
$variable = <<<EOD Hello $name EOD; //=> PHP Parse error: syntax error, unexpected '<<' (T_SL) in php Nowdoc Syntax Literal
$variable = <<<'EOD' Hello world! EOD;
var_dump($variable); //=> string(12) "Hello world!" Escape Sequences $name = 'Alice';
$variable = <<<'EOD' Hello $name EOD; //=> Parse error: syntax error, unexpected '<<' (T_SL) in php