$a = 3; $a += 5; / / sets $a to 8, as if we had said: $a = $a + 5; $b = "Hello "; $b .= "There !"; / / sets $b to "Hello There !", just like $b = $b. "There !";
?php $a = 3; $a += 5; / / affecte la valeur 8 agrave; la variable $a. / / correspond agrave; l'instruction '$a = $a + 5'); $b = "Bonjour "; $b .=" tout le monde !"; / / affecte la valeur "Bonjour tout le monde! "agrave; / / la variable $b / / identique agrave; $b = $b." tout le monde !";?