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26 lines
463 B
26 lines
463 B
<?php
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/**
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* 也就是说php中对象赋值，其实是引用
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*/
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class ClassA{
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public $var=1;
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}
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$a=new ClassA;
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$b=$a; //赋值后，$a,$b只是标识符不一样，其实指向了同样的内容
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$b->var=2;
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echo $a->var.PHP_EOL;
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$c=new ClassA;
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$d=&$c; //引用
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$d->var=2;
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echo $c->var.PHP_EOL;
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$e=new ClassA;
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function func($obj){
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$obj->var=2;
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}
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func($e);
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echo $e->var;
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?>
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