Uniform Server PHP IDE: PHP CLI

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MPG UniCenter

Uniform Server PHP IDE.

PHP CLI

Uniform Server PHP IDE allows you to quickly test PHP CLI scripts. Having an integrated console window the environment is self-contained making it ideal for learning PHP CLI. Debugging CLI scripts requires only a few mouse scripts. Example on this page uses a very basic CLI script to demonstrate CLI input and output.

The step-by-step guide details all steps required for debugging.

Test Script

Test script input_output.php is located in folder H:\us_ide_1\us_portable_php_ide\php_scripts

Debugging steps

Open script, debug and console window

  • Start Notepad++ run Run_IDE.bat.
  • A) Click debugger icon displays debugger window
  • B) Click console icon displays console window
  • C) Open script to be debugged input_output.php


Always perform a syntax check on new scripts or after modifying a script.

  • Right click in edit window c) from the context menu select Check PHP Syntax
  • Alternatively Macro > Check PHP Syntax


Results of syntax check are displayed in the console window. Double clicking on any highlighted errors scrolls the edit window and highlights corresponding line in error.

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Start a debugging session

  • Right click in edit window c) from the context menu select Run PHP CLI Debug
  • Alternatively Macro > Run PHP CLI Debug

Note: If alerted by your firewall “e.g. CLI is trying to access the Internet” always allow access.


  • Notepad++ icon flashes indicating debugging has started.
  • D) The IDE is configured with a default break-point (breaks on first line of code). Green arrow displays current position of debugger.
  • E) Console window displays "Process started" The script was effectively started from this window using a command script. Script input and output are directed to this window.
  • F) Local context tab displays variables. We are using a single variable $name this is currently undefined (no value set)

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Request user input

  • G) Step into button. This allows you to single step through your script.
  • G) Click once, steps to line 3 (it point to the line to be executed)
  • G) Click again. Line 3 is executed. (Top row of debug buttons become disabled)

Note 1:

Debug buttons disabled control is passed to console window. This window is waiting for user input.

Note 2:

Variable $name remains undefined.


Note 3:

Function fwrite() has written string "Enter some text:\n" to standard output STDOUT


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Get user input

  • J) Enter some text "US Test" and press enter.
    • Script (function fgets(STDIN)) reads this line and control is returned to debugger.


  • K) Variable $name becomes defined and set to the value entered US Test
    • Note: All debugging controls are enabled


  • L) Green arrow automatically steps on to the next instruction to be executed.

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Write to console

  • M) Go into. Click this to execute function fwrite().


  • N) Text and variable $name is written to console window.


  • O) Green arrow automatically steps on to the next instruction to be executed.

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Write to console alternative

  • P) Go into. Click this to execute print.


  • Q) Text and variable $name is written to console window.


  • R) Green arrow automatically steps on to the next instruction to be executed.


Note:

Line 5 was included to show print can be used as an alternative to the fwrite(STDOUT, "") function

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Final step

  • S) Go into. Click this to execute final instruction in script.
    • Debugging command menu options disabled.


  • T) Console displays "Process finished".


  • U) Green arrow automatically steps on to end of script. There are no more instructions to execute.


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Summary

Words and images can only provide a starting point hence fire-up the IDE and give it a workout.

The above has shown how to debug CLI scripts that use standard I/O.

Our IDE is capable of debugging PHP scripts that interface to the Windows API for example written using the WinBinder module.

Next page looks techniques for debugging a WinBinder application.

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