HTML

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JS

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DOM

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php

php在服务器上运行!

这就符合我一直以来学习的东西!前端+后端+数据库!

php里可以有前端代码!

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foreach列出数组的每个元素

<?php 
$colors = array("red","green","blue","yellow");
foreach ($colors as $value) {
echo "$value <br>";
}
?>

sql

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