Is it feasible to retrain Java after 6 years of PHP development?
It is feasible. First of all, programming is interconnected after all. With 6 years of experience in PHP development, it will be easy to learn other languages quickly.
Java is easy to learn but difficult to master, because those who use Java mainly do web development and require many frameworks. But there is no conflict between PHP itself and Java. Generally, PHP is used for front-end display, and Java can also be used to write back-end services. If you just think about the level of work, very quickly.
Recommended: "PHP Training"
To convert PHP to Java, you should be clear about the following issues
First locate : Know the current market conditions, what skills you need to master to find a Java development job, and what talents the company needs now. This is one direction for your study.
Systematic learning plan: You need to know what you are learning every day, because there are many novices who have been exposed to it, and many people give up after learning, or they don’t know what they are learning, which makes them very confused about the plan. No, you definitely can’t learn Java, so to learn Java you need to know what to learn every day and what cases to do.
Guidance from an understanding person: If you learn Java by yourself, you will not be able to find a job even after learning it, or you will give up halfway because you will encounter many problems. You don’t have to be a genius to solve all the problems. You can solve it yourself. Having someone to solve basic problems for you will save you a lot of detours.
Note: php Chinese website provides a large number of free, original, high-definition php video tutorials, and will hold php public welfare training regularly!
The above is the detailed content of Is it feasible to retrain Java after 6 years of PHP development?. For more information, please follow other related articles on the PHP Chinese website!

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。

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。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

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。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。

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