你
=的 赋值操作符 ,
==在 “平等”比较操作 和
===对 “相同”的比较操作 。
$a = $b Assign Sets $a to be equal to $b.$a == $b Equal TRUE if $a is equal to $b.$a === $b Identical TRUE if $a is equal to $b, and they are of the same type. (introduced in PHP 4)

你
=的 赋值操作符 ,
==在 “平等”比较操作 和
===对 “相同”的比较操作 。
$a = $b Assign Sets $a to be equal to $b.$a == $b Equal TRUE if $a is equal to $b.$a === $b Identical TRUE if $a is equal to $b, and they are of the same type. (introduced in PHP 4)