How do PHP read the command line entry as a string?

Question

In the Python, I know that to read the data entered by the command line we use the function raw_input.

Example:

Python script:

print 'digite algo para inicializar'

resultado = raw_input()

print 'O resultado é ' + resultado

Command line:

> python script.py
digite algo para inicializar
> teste
o resultado é teste

What about PHP? How to make PHP read the command line entry?

Observing: I want to capture the input not on the script startup, but "in the middle" of it, as in the python, demonstrated above.

Answer 1

For data entry in php use "argv": $argv[0].

Follow an example for entering a single parameter:

<?php

if ($argc != 2 || in_array($argv[1], array('texto1', 'texto 2', 'texto3', 'texto4'))) {
     echo $argv[0]; 
} else {
     echo $argv[1];
}

 ?>

http://php.net/manual/en/reserved.variables.argv.php

Here are more details about the command line: http://php.net/manual/en/features.commandline.php

And here are some examples of usage: https://stackoverflow.com/questions/11048835/php-pass-parameters-from-command-line-to-a-php-script

Answer 2

This can be done through the function fgets combined with the constant STDIN.

Behold:

$line = fgets(STDIN);

PHP script

echo "iniciando a aplicação php\n";

$line = fgets(STDIN);

echo "O resultado é '{$line}'";

See the response taken from SOEN

Despite fgets be used in most cases to read file pointers, PHP supports protocols and Wrappers, through these functions.

In this case, we are reading the command line input as if it were a file line.

See the code working on IDEONE