举个简单的例子，PHP中的松散比较==和严格比较===？[复制]

这是一个简单的例子，可以理解松散比较和严格比较之间的区别

<?php
$var1 = 100;
$var2 = "100";

// loose comparison does not contemplate the data type
// so the integer 100 is equal to string "100"
$comparison = ($var1 == $var2); // true
var_dump($comparison);

// strict comparison contemplates the data type
// so the integer 100 is different to string "100"
$comparison = ($var1 === $var2); // false
var_dump($comparison);