Single Quotes Strings¶
Single quoted strings are strings that include a literal value.
This is an simpler version of the double-quoted strings.
It is possible to include variables $var, single-dimension arrays $array[1] or $array[index], and single-dereferencing object members $object->member. More complex expressions require usage of curly braces {$}, or the usage of the dot operator.
Double quoted strings use the anti-slash ` to escape special characters, such as the anti-slash and the `$ sign.
<?php
// single quoted string : all literal values
$name = 'elephpant loves $signs.';
// double quoted string : variable value will be replaced at execution time.
$greeting = "Hello! $name";
// identical to
$greeting = 'Hello! '.$name;
?>
Related : Double Quotes Strings, Heredocs, Interpolation, String
