I have been working on a requirement (in PHP), where I had stuck with the below.
I need to search for the numbers between 6800 to 6899. How can I search starts with the string ‘68’. So that I will get all the numbers in that range.
Now, I have an idea like:
if ($Model== 'Jazz6800i') return true;
if ($Model== 'Jazz6801i') return true;
......
if ($Model== 'Jazz6899i') return true;
Do we have any alternate in PHP instead of writing hell lot of code, to search starting with 68?
Use regexp:
function isInCorrectRange($item)
{
return preg_match('/Jazz68[0-9][0-9]i/', $item);
}
$result = isInCorrectRange('Jazz6801i');
You can use str_replace, in_array, range for this.
$model = str_replace(array('Jazz', 'i'), '', $model);
if(in_array($model, range(6800, 6899))) {
return true;
}
Something like that :
for ($i=0;$i<=99;$i++)
{
If ($Model == 'Jazz68'.$i.'i')
{
echo "Found ! for Jazz68".$i."i";
break;
}
}
Related
So I have a function that currently has a foreach and it works amazing, but I'm being forced to change it to a while loop:
PLEASE NOTE: The developers at my company don't want to use the foreach and they think that a while loop would be more efficient, but I'm not understanding how that would be executed, so I need some help.
So I have the following function ($post_blocks is an array of arrays):
public function parse_block_data(string $block_name, string $selector, $post_id)
{
if (!has_blocks($post_id)) {
return false;
}
$post_blocks = parse_blocks(get_the_content('', false, $post_id));
foreach ($post_blocks as $block) {
if ($block_name != $block['blockName']) {
continue;
}
if (!isset($block['attrs']['id'])) {
return false;
}
if (isset($block['attrs']['data'][$selector])) {
return $block['attrs']['data'][$selector];
} else {
break;
}
}
return false;
}
It uses the parameters to build up an array as shown below:
Output
So I started building a while loop inside the function, but I'm clueless on how to achieve it without using a foreach or if it's even possible, so I replaced the foreach with:
// I get the 9 counts of $post_blocks correctly.
$block = 0;
while ($block < count($post_blocks))
// If the $block_name doesn't match `blockName` value inside the multi-dimensional array, then continue iterating until the end and then return false.
// If ['attrs']['id'] is not set, return false.
// At last, if we have a blockName and a ID and the selector is set, return ['attrs']['data'][$selector]
}
All help will be appreciated! It makes no sense to me, but if someone can assist, I'd be forever grateful!
It's basically the same as your foreach loop, you just set the iteration variable by indexing the array, and increment the index manually.
$block_num = 0;
while ($block_num < count($post_blocks)) {
$block = $post_blocks[$block_num];
if ($block_name == $block['blockName']) {
if (!isset($block['attrs']['id'])) {
return false;
}
if (isset($block['attrs']['data'][$selector])) {
return $block['attrs']['data'][$selector];
} else {
break;
}
}
$block_num++;
}
I'm not sure why your colleagues think this is preferable.
If there's a company coding style they want you to follow, why don't you ask them what it should be?
I am using 2 regex functions here and I wanna make another function which returns false when the 2 regex are both false and if not, then true.
The problem here is when I wanna use the 2 regex functions in the third one, I have to give them parameters, which is not necessary I think, because the third function will only return a simple true or false. I get an undefined variable whenever I give parameters to the 2 regex functions in the 3rd one.
I tried using global variables which works but since its a bad practice I am looking for a better solution.
Code:
function regex1($input)
{
$regex= "/^[A-Za-z0-9 ]*$/";
if (!preg_match($regex, $input))
{
return false;
}
else
{
return true;
}
}
function regex2($input)
{
$regex= "/^[A-Za-z0-9 ]*$/";
if (!preg_match($regex, $input))
{
return false;
}
else
{
return true;
}
}
function checkBoth()
{
if (regex1($input) === false || regex2($input) === false)
{
return false;
}
else
{
return true;
}
}
EDIT:
The checkBoth function I am using in my other file like this together with the other 2 regex functions:
if (!regex1($input))
{
// show error at the same time
}
if (!regex2($input))
{
// show error at the same time
}
if(checkBoth())
{
// success
}
function regex2($input,$secondVar=false)
{....
Later in code in place where you need just add:
if($secondVar !== false){
// do whatever...
}
If you can't user "false" you can just empty string '' or any other value that will not appear there.
I want to check all elements of an array and find out, whether at least one of them is prefixed by a given string:
public function validateStringByPrefix(string $string, $prefix)
{
$valid = false;
if (is_string($prefix)) {
if (strpos($string, $prefix) === 0) {
$valid = true;
}
} elseif (is_array($prefix)) {
foreach ($prefix as $partPrefix) {
if (strpos($string, $partPrefix) === 0) {
$valid = true;
break;
}
}
}
return $valid;
}
Is it possible / How to to achieve the same a more efficient way?
(It's a cheap method, but it's called a lot of times in my application, so even a minimal improvement might appreciably increase the application's performance.)
You can try next solution:
public function validateStringByPrefix(string $string, $prefix)
{
return (bool)array_filter((array)$prefix, function($prefix) use ($string) {
return strpos($string, $prefix)===0;
});
}
P.S. In case you have few large arrays (with prefixes), my solution is less efficient and you can combine our approaches like this:
public function validateStringByPrefix(string $string, $prefix)
{
if($string=='') {
return false;
}
foreach ((array)$prefix AS $subprefix) {
if (strpos($string, $subprefix)===0) {
return true;
}
}
return false;
}
There are many ways to rome....
//your array to test for
$array=[];
//set valid to false
$valid=false;
//setup prefixes array or not
$prefix='whatever';
//make array if you dont have one
!is_array($prefix) AND $prefix=array($prefix);
//prepare for use as REGEX
$prefix=implode('|',$prefix);
//do the work
array_walk($array,function($val,$key) use(&$valid,$prefix){
if (!$valid && preg_match("#^($prefix)#",$key)) {
$valid = true;
}
});
var_export($valid);
I used preg_match here, because $prefix can be an array, so the math would be: n+ strpos() calls vs. one preg_match() call
And after a single item matches, no more preg_match are called, just iteration to the end and out.
Is it possible to get string/int/function/or anything to compare in php function, if its used in if statement?
function return_str($str) {
$value = valueToCompare(); // I want to get "cat" here
if($str == $value) {
return $value;
}
else {
return false;
}
}
if(return_str('abc') == 'cat') {
echo 'No "abc" is not equal to "cat".';
}
Sorry if my function or example are a bit stupid, this should be part of larger script but I mimimized it.
Note: I don't want to hear Why wouldn't you just type if('abc' == 'cat'), because I must also handle multiple variables to check.
Do you have any ideas to achieve that? Please help me i'm not very good at these things.
How about using a second parameter?
<?php
function return_str($str, $compare) {
if($str == $compare) return $str;
return false;
}
?>
No, this is not possible, and is utterly pointless to try as well. If you want to compare a single string against multiple strings, why not
if (in_array('cat', array('dog', 'cat', 'zebra')) {
... cat's in there
}
I'm stuck in Drupal Panels / PHP Access plugins.
At least, now I found the three conditions to create my final snippet. the purpose of it is to return TRUE; if "condition1 is TRUE" OR "condition2 is TRUE" OR "condition3 is TRUE". I found a lot of similar questions, but the last condition force me to post here to find the right way to do this.
Condition 1:
// At least $view1->result has result.
$view1 = views_get_view('sp_onglet_videos');
$view1->set_display('views-tab-embed_1');
$output1 = $view1->preview();
if ($view1->result) {
return TRUE;
}
Condition 2 (same thing):
// At least $view2->result has result.
$view2 = views_get_view('sp_onglet_audio');
$view2->set_display('views-tab-default');
$output2 = $view2->preview();
if ($view2->result) {
return TRUE;
}
Condition 3 is more complex:
// Checks for content in the field field_txt_videos.
if (isset($contexts['argument_nid_1']->data-> field_txt_videos)) {
$field = $contexts['argument_nid_1']->data-> field_txt_videos;
if (is_null($field)) {
return FALSE;
}
if (is_array($field)) {
foreach ($field as $key => $val) {
if (is_array($val)) {
$field[$key] = array_filter($val);
}
}
$field = array_filter($field);
return count($field);
}
if (is_string($field) && trim($field) == '') {
return FALSE;
}
if ($field) {
return TRUE;
}
return FALSE;
}
I would like to have something clean (and functional) like this:
if ($view1->result && $view2->result && $field) {
return TRUE;
}
But it's to tricky for my php knowledge. Need a little help !
You want to save the result of the 3rd condition (into a variable) and use this result to run your final condition/query. But you can query the 3rd condition if it is a function.
It is better to properly space your code and use plenty of newlines.
However, PHP does have some pretty cool tricks to do assignment inside conditional statements.
if(($view1 = views_get_view('sp_onglet_videos')) AND $view1->set_display('views-tab-embed_1') AND ($output1 = $view1->preview()) AND $view1->result) return TRUE;
However, as you can see this code is a mess - don't do it unless your assignment is really small. Take this simple security check at the top of a PHP file:
<?php defined('BASE_PATH') OR die('Not Allowed');