PHP网站开发实战常用8个小技巧

PHP日常开发中常用的8个小技巧。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP批最取得checkbox的值

1、命名文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

<input type='checkbox' name='checkbox[]' value=dwmyrow[banzhu] />文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

2、使用文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

当计划当作sql指令的一部分时：如果参与控制的字段是数值型的，则文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

if(! empty(_POST['checkbox'])) {
expr = join(",", _POST['checkbox']);
sql = "select * from tbl_name where field in (expr)";
}文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

如果参与控制的字段是数值型的，则文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

if(! empty(_POST['checkbox'])) {
expr = "'".join("','", _POST['checkbox']).".";
sql = "select * from tbl_name where field in (expr)";
}文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP判断Form表单是否提交

action=HTTP_POST_VARS["Button1"];
if(action=="提交")
{
//执行表单操作
}
else
{
//读取默认值
}文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP 获取字符串长度

strlen(myrow[1])文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP Url转向文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

Header("Location: "._SERVER["HTTP_REFERER"]);文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP超全局对象文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

<?php
a = 1;
b = 2;
function Sum()
{
GLOBALS["b"] = GLOBALS["a"] + GLOBALS["b"];
}
Sum();
echo b;
?>文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP 表单取值

如果 mothod="get" 就用 _GET["test"] 代替test
如果 mothod="post" 就用 _POST["test"] 代替test文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP取得当前IP

<?=HTTP_SERVER_VARS["REMOTE_ADDR"]?>文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html

PHP 取得当前时间

<?php
echo date("Y-m-d G:i:s");
?>
date("Y年m月d日")
Date ("Y-n-j")文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/698.html