PHP 互操作性 - 命令行中未显示的打印语句

Question

我遇到了 PHP 没有从 Fortran 返回打印语句的问题。这个想法是 PHP 执行一个命令来编译 Fortran 文件然后运行它。

你被要求通过 print 语句输入一个数字，问题是 none 出现在 CMD 上，但程序按预期工作 - 当我输入一个“不正确”的数字时，它会等待我输入输入一个“正确”的数字然后完成执行。

如何让命令行打印嵌套在 Fortran 文件中的语句？

PHP 脚本

$<?php
// This is a script to test interoperability between Fortran and PHP
$ExecutionStringOne = "gfortran C:\Users\****\Desktop\Programs\Fortran_Programs\FibSequence.f95 -o C:\Users\****\Desktop\Programs\Fortran_Programs\FibSequenceTest";
$ExecutionStringTwo = "C:\Users\*****\Desktop\Programs\Fortran_Programs\FibSequenceTest.exe";
exec ($ExecutionStringOne);
exec ($ExecutionStringTwo);
?>

Fortran 代码：

! This program will calculate the first 7 numbers in the Fibonacci sequence with user input as well as error checking
    Program FibSequence
        implicit none
        ! Defining our global variables 
        Integer :: acceptValue, n_terms          ! Accept Value: 0, 1 - This tracks whether input is correct (0 False, 1 True) , N_terms: Number of terms
        real    :: timeForSubRoutineStart, timeForSubRoutineEnd, totalTime ! Tracks execution time of subroutine
        write(*,*) "Please input an amount of terms to calculate sequentially to - This number can be between 1 and 7"
        read *, n_terms
        if (n_terms > 0 .AND. n_terms <= 7) then
            acceptValue = 1                      ! This is true therefore run program (This isnt really needed but for consistency)
            Call calculateSequence(n_terms)
        else
            acceptValue = 0                      ! This is false therefore run the read again and keep doing so until the output is correct
            do while ( acceptValue == 0 )
                write(*,*) "Invalid number please enter one within the given range - Range ( 1 - 7 )"
                read *, n_terms
                if (n_terms > 0 .AND. n_terms <= 7) then 
                    acceptValue = 1                     !Yay correct input
                    Call calculateSequence(n_terms)
                else
                    write(*,*) "Invalid number, try again" !Boo invalid input
                end if 
            end do
        end if
    End Program
    
    Subroutine calculateSequence(NumberOfTerms)
        Integer :: pt1 = 0, pt2 = 1
        Integer :: pt3
        Call CPU_TIME(timeForSubRoutineStart)
        i = NumberOfTerms
        
        do while (i > 0)
            pt3 = pt1
            pt1 = pt1 + pt2
            pt2 = pt3
            i = i-1
            write(*,*) "Point A Equals", pt1, "Point B Equals", pt2, "Calculated Next Number", pt3
            write(*,*) "Current Term = ", i
            write(*,*) "This program calculated this many points ", NumberOfTerms
            write(*,*) "End" 
        end do
        Call CPU_TIME(timeForSubRoutineEnd)
        totalTime = timeEnd - timeBegin
        write(*,*) "This program took ", totalTime, " seconds to execute"
    end Subroutine calculateSequence

编辑 - 添加了关于该问题的新图片 @roygvib 建议的 ECHO 现在正在返回一些打印语句

Answer 1

在用户@roygvib 的帮助下，我找到了问题的解决方案。

PHP 执行文件和命令的几种不同方式 - 问题集中使用的一种方式是 exec() 它将执行程序而不是 return 任何输出。

另一方面，存在 System() 将启动给定命令和可执行文件以及 return 程序执行生命周期内存在的任何输出。

TLDR：使用 System 而不是 Exec 解决了我遇到的问题。

system ($ExecutionStringOne);
system ($ExecutionStringTwo);

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