Variable variables created within a for loop - php

I'd like to change this:
if ($week_day == "1")
{
$day1_hours = $value;
}
if ($week_day == "2")
{
$day2_hours = $value;
}
if ($week_day == "3")
{
$day3_hours = $value;
}
if ($week_day == "4")
{
$day4_hours = $value;
}
if ($week_day == "5")
{
$day5_hours = $value;
}
if ($week_day == "6")
{
$day6_hours = $value;
}
if ($week_day == "7")
{
$day7_hours = $value;
}
}
Into something more readable, like a for loop, or whatever other suggestions you all may have.
I tried to do:
for ($c=1; $c<8, $c++)
{
if ($week_day == $c)
{
$day".$c."_hours = $value;
}
}
But I know that is nowhere near correct, and I have no idea how to insert another variable within a variable.
Any help is appreciated!

Try this syntax.
${'day'.$c.'_hours'} = $value;

Try this
$hours[$week_day] = $value

Something like this
$week_day = 3;
$value = "hi";
${"day" . $week_day . "_hours"} = $value;
echo $day3_hours;

My interpretation.
$week = 7;
$day = array();
for($i=1; $i<=7; $i++){
$day[$i]['hours'] = $value;
}
You can declare the numbers of weeks you want and to pull the data you can do something like this:
echo $day[1]['hours']

Related

I have many elseif statements. How can i optimize them?

Is there any way to optimize this code? I mean its working and all but it seems with lots of "elseif" its actually not so optimized:
foreach ($plenty_variation['properties'] as $row) {
if (strpos($row['relationValues']['0']['value'], $needle_de_0) === 0) {
$result_de_0 = $row['relationValues']['0']['value'];
$shopware["translations"]["0"]["customFields"]["free1"] = str_replace("Text_de_0_","",$result_de_0);
break;
}
elseif (strpos($row['relationValues']['1']['value'], $needle_de_0) === 0) {
$result_de_0 = $row['relationValues']['1']['value'];
$shopware["translations"]["0"]["customFields"]["free1"] = str_replace("Text_de_0_","",$result_de_0);
break;
}
elseif (strpos($row['relationValues']['2']['value'], $needle_de_0) === 0) {
$result_de_0 = $row['relationValues']['2']['value'];
$shopware["translations"]["0"]["customFields"]["free1"] = str_replace("Text_de_0_","",$result_de_0);
break;
}
}
In $row['relationValues']['0']['value'] the ['0'] is inconsistent and not always the same.
Why don't you use another loop?
foreach ($plenty_variation['properties'] as $row) {
for($i = 0; $i < count($row); $i++){
$value = $row['relationValues'][$i]['value'];
if(strpos($value, $needle_de_0) === 0){
$shopware["translations"][$i]["customFields"]["free" . $i] = str_replace("Text_de_0_", "", $value);
break;
}
}
}
In the case above I take that you'd like to loop the $shopware['translations'] positions as the same of the $plenty_variation['properties']. If this is not the case, just let it fixed:
$shopware["translations"]["0"]["customFields"]["free1"]

Auto Description From Tags

I'm trying to generate auto description from tags.
The code was working but after updating my site to Laravel 6 in stop working. I need to get it back working.
if( !empty( $request->description ) )
{
$description = Helper::checkTextDb($request->description);
}
else
{
$a_key = explode(",", strtolower($request->tags));
if(count($a_key) == 0)
$description = 'This is a great thing';
else
{
$description_get_keys = '';
foreach ($a_key as &$value)
{
if($value == end($a_key) && count($a_key) != 1)
$description_get_keys = $description_get_keys.' and '.$value.'.';
else if(count($a_key) == 1)
$description_get_keys = $value.'.';
else if (count($a_key) > 1 && $a_key[0] == $value)
$description_get_keys = $value;
else
$description_get_keys = $description_get_keys.', '.$value;
}
$description = 'This is a great thing about '.$description_get_keys;
}
}
I see a couple things that could possibly be an issue, not knowing what came before this code.
I will assume that the $request variable is an instance of Illuminate\Http\Request and that it is available in the function, right?
Try this updated code:
if($request->has('description'))
{
$description = Helper::checkTextDb($request->description);
}
else if ($request->has('tags'))
{
if (strpos($request->tags, ',') === false)
{
$description = 'This is a great thing';
}
else {
$a_key = explode(",", strtolower($request->tags));
$a_count = count($a_key);
$description_get_keys = '';
for ($i = 0; $i < $a_count; $i++)
{
if ($a_count == 1) {
$description_get_keys = "{$a_key[$i]}.";
}
else {
// first
if ($i === 0) {
$description_get_keys = $a_key[0];
}
// last
else if ($i === $a_count - 1) {
$description_get_keys .= " and {$a_key[$i]}.";
}
// middle
else {
$description_get_keys .= ", {$a_key[$i]}";
}
}
}
$description = "This is a great thing about {$description_get_keys}";
}
}
I wrote that quick so hopefully there are no errors.

Shorter code with For

Is there any way to make this code shorter ?
If ($Item_1 != "_") { $items1 = explode("_", $Item_1); } Else {}
If ($Item_2 != "_") { $items2 = explode("_", $Item_2); } Else {}
If ($Item_3 != "_") { $items3 = explode("_", $Item_3); } Else {}
If ($Item_4 != "_") { $items4 = explode("_", $Item_4); } Else {}
If ($Item_5 != "_") { $items5 = explode("_", $Item_5); } Else {}
If ($Item_6 != "_") { $items6 = explode("_", $Item_6); } Else {}
If ($Item_7 != "_") { $items7 = explode("_", $Item_7); } Else {}
If ($Item_8 != "_") { $items8 = explode("_", $Item_8); } Else {}
If ($Item_9 != "_") { $items9 = explode("_", $Item_9); } Else {}
If ($Item_10 != "_") { $items10 = explode("_", $Item_10); } Else {}
If ($Item_11 != "_") { $items11 = explode("_", $Item_11); } Else {}
If ($Item_12 != "_") { $items12 = explode("_", $Item_12); } Else {}
I try it make shorter with For but it doesnt work example:
For ($i = 1; $i <= 12; $i++) {
If (${$Item_ . $i} != "_") .... dont work for me :/
}
Any ideas?
The idea is good. You just had a little error while building the variable name. Use the following code:
for ($i = 1; $i <= 12; $i++) {
if (${"Item_$i"} != "_") .... should work
}
What you are doing is called variable variables in php. Check the manual about that for further info and examples.
Another idea: Why not using an array? this should suite better here:
$item = array (
'foo', 'bar', 'test', 'xyz', ...
);
for ($i = 1; $i <= count($item); $i++) {
if ($item[$i] != "_")
}
Further note, that you can use the ternary operator to shorten the if statement. (note that I wouldn't do that in this situation because it is less readable, but I'll at least mention it for completeness):
$item[$i] != "_" ? $other[$i] = 'something' : 1; // no else block, just a `NOP 1`;
For clarity try this:
$item_var = "Item_".$i;
If ($$item_var != "_"){}
You should probably be using arrays instead if var1, var2, etc. You could easily use a loop too.

Storing array in a variable

I'm trying to replace the code below
$Palette = array(
"0"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100),
"1"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100),
"2"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100),
"3"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100),
"4"=>array("R"=>176,"G"=>46,"B"=>224,"Alpha"=>100),
);
with something similar but different values for the R, G and B. I have written the code below so far as a replacement:
$x = '0';
$incrementarray = array("0"=>"A","1"=>"B","2"=>"C","3"=>"D","4"=>"E");
do
{
if ($correct == $incrementarray[$x])
{
$colour[$x] = '"'.$x.'"=>array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100),';
}
else
{
$colour[$x] = '"'.$x.'"=>array("R"=>255,"G"=>51,"B"=>51,"Alpha"=>100),';
}
$x++;
}
while ($x <= '4');
$allcolours = $colour[0].$colour[1].$colour[2].$colour[3].$colour[4];
however, when I implement it into my script using the line below , it doesn't work.
$Palette = array($allcolours);
$x = '0';
$incrementarray = array("0"=>"A","1"=>"B","2"=>"C","3"=>"D","4"=>"E");
do
{
if ($correct == $incrementarray[$x])
{
$Pallete[$x] = array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100);
}
else
{
$Pallete[$x] = array("R"=>255,"G"=>51,"B"=>51,"Alpha"=>100);
}
$x++;
}
while ($x <= '4');
there is a little excessive usage of $x.
as a matter of fact, you don't need that variable at all
$Palette = array();
$incrementarray = array("0"=>"A","1"=>"B","2"=>"C","3"=>"D","4"=>"E");
foreach ($incrementarray as $value)
{
if ($correct == $value)
{
$Palette[] = array("R"=>188,"G"=>224,"B"=>46,"Alpha"=>100);
}
else
{
$Palette[] = array("R"=>255,"G"=>51,"B"=>51,"Alpha"=>100);
}
}
you need to create array, not the PHP code to create array.

PHP function to check if the number belongs to the interval

There is an array:
$bounds = array([0]=>array('lower'=>2,'upper'=>5),
[1]=>array('lower'=>0,'upper'=>3));
and a variable:
$val = 4;
Is there any PHP function that can say whether $val belongs to any interval defined by 'lower' and 'upper' bounds in $bounds array? In this example 4 belongs to the 1st interval [2; 5]. So, the answer should be 'true'.
I don't think there is a built-in function to do this.
However, you can do it with a foreach statement:
function check_interval($bounds, $val) {
foreach ($bounds as $array) {
if($array['lower'] <= $val && $array['upper'] >= $val)
return true;
}
return false;
}
I'm not aware of any. You'll probably have to code it. Something like this will do:
function isFromInterval($bounds, $val) {
foreach ($bounds as $value) {
if ($val >= $value['lower'] && $val <= $value['upper']) {
return true;
}
}
return false;
}
No.
You would have to make a loop for the array like this
$val = 4;
$key_id = FALSE;
foreach($bounds as $key => $data){
if($val <= $data['upper'] AND $val >= $data['lower']){
$key_id = $key;
break;
}
}
if($key_id !== FALSE){
// found something
// $bounds[$key_id] is your result in the array
} else {
// found nothing
}
As a function
function find_range($bounds=array(), $val=0, $return_key=TRUE){
if(is_array($bounds) === FALSE){
$bounds = array();
}
if(is_numeric($val) === FALSE){
$val = 0;
}
if(is_bool($return_key) === FALSE){
$return_key = TRUE;
}
$key_id = FALSE;
foreach($bounds as $key => $data){
if($val < $data['upper'] AND $val > $data['lower']){
$key_id = $key;
break;
}
}
if($key_id !== FALSE){
return ($return_key === TRUE ? $key_id : TRUE);
} else {
return FALSE;
}
}
No, but you can do:
$bounds = array(3=>array('lower'=>2,'upper'=>5),
4=>array('lower'=>0,'upper'=>3));
$val = 4;
foreach($bounds as $num => $bound){
if(max($bound) >= $val && $val >= min($bound)){
echo $num;
}
}

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