Definition

string string_interpolate(string $input, array|object $tokenParameters)

For a string input with marked placeholders, called positional tokens, inserts $tokenParameters into the placeholders.

Parameters

string $input

String with positional tokens. If $tokenParameters is an array, positional tokens are of the form {n}, where n is the index of the element of $tokenParameters to be inserted in the positional token. If $tokenParameters is an object, the format is {key}, which inserts the value assigned to key in $tokenParameters.

array|object $tokenParameters

Array or object with data to be inserted into positional tokens inside input.

Returns

string

The string $input with positional tokens replaced with $tokenParameters.

Examples

{
  a: string_interpolate('Hello, {0}!', ['World']),
  b: string_interpolate('Hello, {0}! I\'m {1}. {2}', ['World', 'Alice']),
  c: string_interpolate('Hello, {name}!', {"name": 'World'}),
  d: string_interpolate('Hello, {name}! I\'m {sender}. {greeting}', {"name": 'World', "sender": 'Alice'})
}

{
  "a": "Hello, World!",
  "b": "Hello, World! I'm Alice. {2}",
  "c": "Hello, World!",
  "d": "Hello, World! I'm Alice. {greeting}"
}