What is the variable interpolation in PHP?

[ifuturzcom]

What is the variable interpolation in PHP?

[johnj]

$name = "Hello";

echo " $name world";

The output for this will be Hello World. In this case the value for the variable $name was interpolated by php.

[patilpallavi]

variable interpolation only occurs when the string literal is in double-quoted,
but not when it is single-quoted.Below is one simple example

EX :- $name = "Hello";
print "${name} all, have a good day.";

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[Acesystech]

php variable interpolation is basically the extraction of the contained value of a given variable.

For example,

Storing "hello" in the scalar* variable $wish,
$wish='hello';

will interpolate properly raw,

echo $wish;

or when double quoted,

echo "She said $wish";

but NOT when single quoted.

echo 'She said $wish'; // prints out: She said $wish