Possible Duplicate:
The 3 different equals可能重复：3个不同的等于
Is there any difference between == and === in php? both seem to work fine for me when i use them in a conditional statement. I am very new to programming in PHP. Please consider this and answer in simple words.
php中==和===之间有什么区别吗？当我在条件语句中使用它们时，两者似乎都适合我。我是用PHP编程的新手。请考虑一下并用简单的话回答。
2 个解决方案
#1
12
$a == $b- $ a == $ b
Equal true: if $a is equal to $b, after type juggling.
等于true：如果$ a等于$ b，则在类型杂耍之后。
$a === $b- $ a === $ b
Identical true: if $a is equal to $b, and they are of the same type.
完全相同：如果$ a等于$ b，则它们属于同一类型。
#2
4
Identical:
$a === $b
$ a === $ b
TRUE if $a is equal to $b, and they are of the same type. (introduced in PHP 4)
如果$ a等于$ b，则为TRUE，它们属于同一类型。 （在PHP 4中引入）
Equal:
$a == $b
$ a == $ b
TRUE if $a is equal to $b after type juggling.
如果在类型杂耍之后$ a等于$ b，则为TRUE。
Read here for more: http://www.php.net/manual/en/language.operators.comparison.php
请阅读此处了解更多信息：http：//www.php.net/manual/en/language.operators.comparison.php
#1
12
$a == $b- $ a == $ b
Equal true: if $a is equal to $b, after type juggling.
等于true：如果$ a等于$ b，则在类型杂耍之后。
$a === $b- $ a === $ b
Identical true: if $a is equal to $b, and they are of the same type.
完全相同：如果$ a等于$ b，则它们属于同一类型。
#2
4
Identical:
$a === $b
$ a === $ b
TRUE if $a is equal to $b, and they are of the same type. (introduced in PHP 4)
如果$ a等于$ b，则为TRUE，它们属于同一类型。 （在PHP 4中引入）
Equal:
$a == $b
$ a == $ b
TRUE if $a is equal to $b after type juggling.
如果在类型杂耍之后$ a等于$ b，则为TRUE。
Read here for more: http://www.php.net/manual/en/language.operators.comparison.php
请阅读此处了解更多信息：http：//www.php.net/manual/en/language.operators.comparison.php