How does PHP handle the use of curly braces within strings compared to accessing array elements directly with square brackets?

When using curly braces within strings in PHP, it is used to explicitly specify the end of the variable name. This is especially useful when accessing array elements within strings to avoid any ambiguity. By using curly braces, PHP can accurately determine the variable name and its value within the string. 

// Using curly braces to access array elements within strings
$array = ['foo' => 'bar'];
echo "The value is {$array['foo']}";

Keywords

PHP curly braces strings array elements square brackets

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