90 php namespace

1. If you don’t add a namespace
test1.php

<code><span><span>function</span><span>test</span><span>()</span>
{</span><span>echo</span><span>'test1'</span>;
}</code>

test2.php

<code><span><span>function</span><span>test</span><span>()</span>
{</span><span>echo</span><span>'test2'</span>;
}</code>

test.php

<code><span>require</span><span>'test1.php'</span>;
<span>require</span><span>'test2.php'</span>;</code>

Error:

---

2. Added namespace

test1.php

<code><span>namespace</span><span>Test1</span>;

<span><span>function</span><span>test</span><span>()</span>
{</span><span>echo</span><span>'test1'</span>;
}</code>

test2.php

<code><span>namespace</span><span>Test2</span>;

<span><span>function</span><span>test</span><span>()</span>
{</span><span>echo</span><span>'test2'</span>;
}</code>

test.php

<code><span>require</span><span>'test1.php'</span>;
<span>require</span><span>'test2.php'</span>;

Test1\test();
<span>echo</span><span>'<br/>*************<br/>'</span>;
Test2\test();</code>

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The above has introduced the 90 PHP namespace, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.