php对象比较

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Php对象比较

代码：

<?php

* php对象的比较

function testEqual($bool) {

if ($bool == 'true') {

return 'true';

}else{

return 'false';

}//end if()

}//end func testEqual

function compareLee($m, $n) {

echo " m==n:  ".testEqual($m==$n);

echo " m!=n:  ".testEqual($m!=$n);

echo " m===n:  ".testEqual($m===$n);

echo " m!==n:  ".testEqual($m!==$n);

}//end func compareLee

class CompareObj {

private $valu;

function __construct($val = true) {

$this->valu=$val;

}//end func construct

}//end class CompareObj

class CompareObj2 {

private $valu;

function __construct($val = true) {

$this->valu=$val;

}//end func construct

}//end class CompareObj

$comp = new CompareObj();

$comps = new CompareObj();

$complee = $comp;

$comp2 = new CompareObj2();

compareLee($comp, $comps);

compareLee($comp, $complee);

compareLee($comp, $comp2);

结果：

m==n:  true
m!=n:  false
m===n:  false
m!==n:  true

m==n:  true
m!=n:  false
m===n:  true
m!==n:  false

m==n:  false
m!=n:  true
m===n:  false
m!==n:  true

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