A small BUG in maxmin function (PHP) is shown in the following figure:
# Psy Shell v0.3.3 (PHP 5.5.30 — cli) by Justin Hileman>>> ceil(-0.5)=> -0.0>>> max(-0.0, 0)=> 0.0>>> max(ceil(-0.5), 0)=> -0.0
In the above demonstration, the ceil function
Take a direct look at the show:
# Psy Shell v0.3.3 (PHP 5.5.30-cli) by Justin hileman>>> ceil ( -0.5) = -0.0>>> max ( -0.0, 0) = 0.0 >>> Max (Ceil ( -0.5), 0) = 0.0
In the above demo, the Ceil function returns a 0.0 when -0.0,max passes the
In PHP development, I often use timeout processing to timeout. I will talk about several scenarios, it is convenient for users who need to work in PHP development to use timeout handling to timeout. I will talk about several scenarios:
1.
PHP Math function Summary (classic worth collecting), PHP is worth collecting
This paper summarizes and analyzes the mathematical operation function of PHP. Share to everyone for your reference, as follows:
First, the common function
PHP regular Failure-Max backtracking (pcre.backtrack_limit)/recursive limit
Yesterday, colleagues in the processing of a regular collection program, found a strange phenomenon: in the local regular rules can be matched to any write, but uploaded to
PHP regular Failure-Max backtracking (pcre.backtrack_limit)/recursive limit
Yesterday, colleagues in the processing of a regular collection program, found a strange phenomenon: in the local regular rules can be matched to any write, but uploaded to
Specify Directories
/Usr/local/php/sbin/php-fpm/Usr/local/php/etc/php-fpm.conf/Usr/local/php/etc/php. iniI. startup parameters of php-fpmCopy codeThe Code is as follows:# Test the configuration of
Deep understanding based on php-fpm parameters. Psaux | grepphp-fpm | more View php-fpm total number php-fpm.conf configure pidstringPID file location. default is empty. error_logstring error log location. default: Installation Path # INSTA
Ps aux |
Php-fpm startup ?????? Php5.3.3 the source code starts to contain php-fpm. you don't need to fix it any more. you just need to unlock the source code and directly configure it, for php-fpm compilation parameters,-enable-fpm-with-fpm-user =
This paper summarizes and analyzes the PHP mathematical operation function. Share to everyone for your reference, specific as follows:
First, the commonly used function description:
Abs: Get absolute value.
Acos: Gets the inverse cosine value.
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