Variable in PHP can start with underline?

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Variable in PHP can start with underline?

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I wonder if a variable in php can start with underline , for example: $_1teste;

php

asked by anonymous 27.09.2016 / 16:32

3 answers

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score 2 · Answer 1

Yes. Yes you can!

According to the official PHP documentation on variables :

"A valid variable name starts with a letter or underline"

Examples:

$4site = 'not yet';     // inválido; começa com um número
$_4site = 'not yet';    // válido; começa com um sublinhado
$täyte = 'mansikka';    // válido; 'ä' é um caracter ASCII (extendido) 228

score 0 · Answer 2

Yes, variables can start with a letter or underline.

For example:

// Variaveis validas;
$_variavel = 'valor';
$_2variavel = 'valor';
$_1234_vel = 'valor';

// Variaveis não validas;
$+variavel = 'valor';
$-2variavel = 'valor';
$?1234_vel = 'valor';

See you soon!

score 0 · Answer 3

Yes, in php these are the rules.

See official PHP documentation on variables :

"A valid variable name starts with a letter or underline"

Examples:

  // Variaveis validas;
   $_variavel = 'valor';
   $_2variavel = 'valor';
   $_1234_vel = 'valor';

    // Variaveis não validas;
    $+variavel = 'valor';
    $-2variavel = 'valor';
    $?1234_vel = 'valor';