The phar in php is similar to the packaging file jar in java, that is, compressing a type of file in a folder. The following article mainly introduces you to the relevant information about the use of the phar package in PHP. The introduction in the article is relatively detailed. Friends who need it can take a look below.
Preface
After PHP5.3, a Java-like jar package named phar is supported. Used to package multiple PHP files into one file.
First you need to modify the php.ini configuration to turn off readonly of phar. By default, phar packages cannot be written, and include is turned on by default.
phar.readonly => On
Create a phar compressed package
<?php $phar = new Phar('swoole.phar'); $phar->buildFromDirectory(__DIR__.'/../', '/\.php$/'); $phar->compressFiles(Phar::GZ); $phar->stopBuffering(); $phar->setStub($phar->createDefaultStub('lib_config.php'));
The parameter of new Phar
is the name of the compressed package. buildFromDirectory specifies the compressed directory, and the second parameter can specify the extension of the compressed file through regular rules.
Phar::GZ
indicates using gzip to compress this file. Also supports bz2 compression. Just change the parameter to PHAR::BZ2
.
setSub is used to set the file to start loading. lib_config.php is automatically loaded and executed by default.
After executing this code, a swoole.phar file is generated.
Use phar compressed package
<?php include 'swoole.phar'; include 'swoole.phar/code/page.php';
You can use phar It is very convenient to package your code and integrate it for deployment to online machines.
Related recommendations:
Archive format for PHP developmentpharFile concept and usage (example)
pharHow to extend to save space
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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。

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。

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。


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