如何将多个变量分配到单个变量？ [重复]

Question

This question already has an answer here:

• How to combine two strings together in PHP? 17 answers

while trying this, I get error. is there a way to do it? I can assign multiple strings to a single variable but I don't know why it doesn't work with another variables.

$var1 = "Hello";
$var2 = "There";

$var3 = $var1, $var2;

echo $var3,  "<br />";

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Answer 1

Use concat like this:

(Or maybe you just made a typo because , is directly to the left of .)

$var1 = "Hello";
$var2 = "There";

$var3 = $var1 . " " . $var2;

echo $var3 . "<br />";

See for further reference:

http://php.net/manual/en/language.operators.string.php