What does the .= operator mean in PHP?

php operators equals
codacopia picture codacopia · Feb 13, 2013 · Viewed 39.9k times · Source

I have a variable that is being defined as 

$var .= "value";

How does the use of the dot equal function?

Answer

Blender picture Blender · Feb 13, 2013

It's the concatenating assignment operator. It works similarly to:

$var = $var . "value";

$x .= differs from $x = $x . in that the former is in-place, but the latter re-assigns $x.

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