


Since I don’t want to transmit plain text when doing ajax post, I want to use js to encrypt a js object into a string or binary string for transmission, but I don’t know how to encrypt it, and this encrypted string needs to be in php Decrypt it on the end, and the decrypted data is preferably a php array. Does anyone have such a need? Do you know how to achieve this?
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Since I don’t want to transmit plain text when doing ajax post, I want to use js to encrypt a js object into a string or binary string for transmission, but I don’t know how to encrypt it, and this encrypted string needs to be in php Decrypt it on the end, and the decrypted data is preferably a php array. Does anyone have such a need? Do you know how to achieve this?
First of all, crypto-js can solve your problem. Choose a symmetric encryption algorithm (such as AES-256-CBC), use AES + password to encrypt on the PHP side, and use AES + password to decrypt on the js side - but this does not make much sense because your passwords are already expressed in plain text in the js code. .
So if your purpose is to transmit untext, it is recommended that you implement asymmetric encryption from the transport layer. The simplest way is to change the server protocol from HTTP to HTTPs.
You can use an asymmetric encryption algorithm, encrypting with the public key in the browser and decrypting with the private key on the server side. The jsencrypt project supports RSA encryption. You only need to use openssl
to generate a key pair, and then put the public key into the page. PHP can decrypt using the openssl series of functions.
The encrypted and decrypted data are all strings. If you want to get the array, you can create an object in JS, then adjust JSON.stringify
and then encrypt it. What PHP decodes is a JSON string, and you can use the json_decode function to decode it to get an array.

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。


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