Drupal: custom block doesn't appear - php

Question

I am new at Drupal 7 and I'm creating a Block by code, following this tutorial.
So I create a new module folder at drupal/sites/all/modules and created two files:
block_square_menu.info: it has the info of the module:
name = Block Square Menu
description = Module that create a Block for Square menu, menu shown only in home page
core = 7.x
package = custom
block_square_menu.module: it contains the PHP code:
<?php
/**
* Implements hook_block_info().
*/
function block_square_block_info() {
$blocks = array();
$blocks['block_square'] = array(
'info' => t('Block Square'),
'cache' => DRUPAL_CACHE_PER_ROLE,
);
return $blocks;
}
/**
* Implements hook_block_view().
*/
function block_square_block_view($delta = '') {
$block = array();
switch ($delta) {
case 'block_square':
$block['subject'] = t('block Title');
$block['content'] = t('Hello World!');
break;
}
return $block;
}
After save the files, I go to Admin/Modules, I activate the new module and save the configuration. Now I go to Structure/Blocks and it should list my new Block, but it doesn't do.
I have followed all the tutorial steps and I cleaned Drupal cache, but I'm still having the problem.

Answer 1

First solve your mistake: change the function name where you implemented hook_block_view(), you need to change it as function blocks_square_block_view()
/**
* Implements hook_block_view().
*/
function blocks_square_block_view($delta = '') {
$block = array();
......
After also if not solve then remove 'cache' attribute from hook_block_info() it is optional.
Then follow 2 steps if you missed.
1) Clear all cache (/admin/config/development/performance).
2) Enable your custom module (/admin/modules).
After trying again, your block should appear in (/admin/structure/block).

Answer 2

Solved, the problem was the name of the functions. So the names started with "block_square" which it have the word "block" and it causes some trouble so I changed the all the names with menu_square.
So the functions are now:
menu_square_block_info()
menu_square_block_view($delta = '')
And the files are:
menu_square.info
menu_square.module
The code of the files are:
info:
name = Menu Square
description = Module that create a Block for Square menu, menu shown only in home page
core = 7.x
package = custom
module:
<?php
/**
* Implements hook_block_info().
*/
function menu_square_block_info() {
$blocks['menu_square'] = array(
'info' => t('Block Square'),
//'cache' => DRUPAL_CACHE_PER_ROLE,
);
return $blocks;
}
/**
* Implements hook_block_view().
*/
function menu_square_block_view($delta = '') {
$block = array();
switch ($delta) {
case 'menu_square':
$block['subject'] = t('block Title');
$block['content'] = t('Hello World!');
break;
}
return $block;
}