I need the array($project_Ids) out of function any suggestion.This is in view
I can't call the function cause already is called; I just want some how to update this array().
$project_Ids=array();
function generateProperties($listP, $sizeS){
global $project_Ids;
$i=0;
foreach ($listP as $pr) {
$i++;
$pr['project_id'];
$project_Ids[$i]=$pr['project_id'];
echo "<li class='' style='cursor: pointer;height:" . $sizeSmallBlock . "px;' dds='" . $project['project_id'] . '-' . $project['project_calendar_id'] . "' id='" . $project['project_id'] . '-' . $project['project_calendar_id'] . "'>" .
$description .
"</li>";
}
}
You need to define the array inside the function, and then have the function return it!
function generateProperties($listP, $sizeS){
$project_Ids=array();
$i=0;
foreach ($listP as $pr) {
$i++;
$project_Ids[$i]=$pr['project_id'];
}
return $project_Ids;
}
// then elsewhere in your code
$project_Ids = generateProperties($listP, $sizeS);
Edit:
From looking at your foreach loop - it seems you are just getting the array values and storing them in an array? If so - just use array_values - it does exactly what you want in one line of code:
$project_Ids = array_values($listP);
It is already available outside of the function, as you have correctly defined it outside.
You may want to brush up on scope.
$project_Ids = generateProperties($listP, $sizeS);
This will work but you have to read it from end of the page after rendering all the page :)
Related
In my for loop for ($i = 1; $i <= 3; $i++) i have have html code that will be echod 3 times. The html also using PHP objects ($help).
$help has 3 things, $help->url_1, $help->text_1, $help->icon_1. But through the loop, I want it so that when for example $i is at 2, i want to use $help->url_2, etc. How can i sort of increment the variable name in the echo string of in the loop?
<?php
class Help
{
public $url;
public $text;
public $icon;
}
$help1 = new Help();
$help1->url = 'your url';
$help1->text = 'your text';
$help1->icon = 'url to your icon';
$helps[] = $help1;
//Repeat for other helps (help2, help3, etc.)
?>
Once you have an array of objects, you only need to loop into it using a foreach loop :
foreach ($helps as $help) {
echo "<h3>" . $help->url . "</h3>";
echo "<p>" . $help->text . "</p>";
echo "<img src='" . $help->icon . "' alt='your alt'/>";
}
I have two different method which help to make drop_down (select) option. Both are work same. only different is in logic for showing selected option
Method 1:
function unit_type_drop_down($selected=''){
$where = array('status'=>'1');
$unit_type_data = $this->select_result('unit_type', 'id,name', $where);
$html = '';
foreach ($unit_type_data as $value) {
if($value->id == $selected){
$html.='<option value="' . $value->id . '" selected>' . ucfirst($value->name) . '</option>';
}else{
$html.='<option value="' . $value->id . '">' . ucfirst($value->name) . '</option>';
}
}
return $html;
}
Method 2:
function unit_type_drop_down($selected=''){
$where = array('status'=>'1');
$unit_type_data = $this->select_result('unit_type', 'id,name', $where);
$html = '';
foreach ($unit_type_data as $value) {
$html.='<option value="' . $value->id . '">' . ucfirst($value->name) . '</option>';
}
$html = str_replace('value="'.$selected.'"', 'value="'.$selected.'" selected="selected"', $html);
return $html;
}
unit type data has value something like
$unit_type_data = array(
array('id'=>1,'name'=>'unit1'),
array('id'=>1,'name'=>'unit1'),
array('id'=>1,'name'=>'unit1'),
.
.
.
.
.
array('id'=>1,'name'=>'unit1')
);
The first method is faster because IF-ELSE statement and string concatenation consume fewer resources and operations than search and replacement in a string.
Of course, if you want to get exact metrics of speed both methods - should calculate asymptotic complexity for concatenation of strings and replacement string in PHP.
Also, the first method seems more clear to readable than the second method
You can use getusage to check execution time of any PHP script. Or with microtime before and after each script, like this:
$before = microtime(true);
// some script
$after = microtime(true);
echo ($after-$before);
First and foremost, forgive me if my language is off - I'm still learning how to both speak and write in programming languages. How I can retrieve an entire object from an array in PHP when that array has several key, value pairs?
<?php
$quotes = array();
$quotes[0] = array(
"quote" => "This is a great quote",
"attribution" => "Benjamin Franklin"
);
$quotes[1] = array(
"quote" => "This here is a really good quote",
"attribution" => "Theodore Roosevelt"
);
function get_random_quote($quote_id, $quote) {
$output = "";
$output = '<h1>' . $quote["quote"] . '.</h1>';
$output .= '<p>' . $quote["attribution"] . '</p>';
return $output;
} ?>
<?php
foreach($quotes as $quote_id => $quote) {
echo get_random_quote($quote_id, $quote);
} ?>
Using array_rand and var_dump I'm able to view the item in the browser in raw form, but I'm unable to actually figure out how to get each element to display in HTML.
$quote = $quotes;
$random_quote = array_rand($quote);
var_dump($quote[$random_quote]);
Thanks in advance for any help!
No need for that hefty function
$random=$quotes[array_rand($quotes)];
echo $random["quote"];
echo $random["attribution"];
Also, this is useless
<?php
foreach($quotes as $quote_id => $quote) {
echo get_random_quote($quote_id, $quote);
} ?>
If you have to run a loop over all the elements then why randomize hem in the first place? This is circular. You should just run the loop as many number of times as the quotes you need in output. If you however just need all the quotes but in a random order then that can simply be done in one line.
shuffle($quotes); // this will randomize your quotes order for loop
foreach($quotes as $qoute)
{
echo $quote["quote"];
echo $quote["attribution"];
}
This will also make sure that your quotes are not repeated, whereas your own solution and the other suggestions will still repeat your quotes randomly for any reasonably sized array of quotes.
A simpler version of your function would be
function get_random_quote(&$quotes)
{
$quote=$quotes[array_rand($quotes)];
return <<<HTML
<h1>{$quote["quote"]}</h1>
<p>{$quote["attribution"]}</p>
HTML;
}
function should be like this
function get_random_quote($quote_id, $quote) {
$m = 0;
$n = sizeof($quote)-1;
$i= rand($m, $n);
$output = "";
$output = '<h1>' . $quote[$i]["quote"] . '.</h1>';
$output .= '<p>' . $quote[$i]["attribution"] . '</p>';
return $output;
}
However you are not using your first parameter-$quote_id in the function. you can remove it. and call function with single parameter that is array $quote
Why don't you try this:
$quote = $quotes;
$random_quote = array_rand($quote);
$random = $quote[$random_quote];
echo '<h1>' . $random["quote"] . '.</h1><br>';
echo '<p>' . $random["attribution"] . '</p>';
Want to create a function:
echo get_random_quote($quotes);
function get_random_quote($quotes) {
$quote = $quotes;
$random_quote = array_rand($quote);
$random = $quote[$random_quote];
return '<h1>' . $random["quote"] . '.</h1><br>'.'<p>' . $random["attribution"] . '</p>';
}
First, you dont need the $quote_id in get_random_quote(), should be like this:
function get_random_quote($quote) {
$output = "";
$output = '<h1>' . $quote["quote"] . '.</h1>';
$output .= '<p>' . $quote["attribution"] . '</p>';
return $output;
}
And I cant see anything random that the function is doing. You are just iterating through the array:
foreach($quotes as $quote_id => $quote) {
echo get_random_quote( $quote);
}
According to http://php.net/manual/en/function.array-rand.php:
array_rand() Picks one or more random entries out of an array, and
returns the key (or keys) of the random entries.
So I guess $quote[$random_quote] should return your element, you can use it like:
$random_quote = array_rand($quotes);
echo get_random_quote($quote[$random_quote]);
I'm still a PHP noob, so I apologize if this is something simple.
I am creating a fairly basic search facility for a website using PHP and mySQL. I have connected to the database, selected the database, queried the table and have fetched the table columns;
$k = htmlspecialchars($_GET['k']); // Get search query
$select = mssql_query("SELECT * FROM search WHERE Title Like '%" . $k . "%'");
if( mssql_num_rows($select) < 1) {
$noResults = 'No results found for <b>' . $k . '</b>, <label for="k">Please try again.</label>';
} else {
while ($results = mssql_fetch_array($select)) {
$title = $results['Title'];
$link = $results['Link'];
$description = $results['Description'];
}
}
When I put the $results[''] columns into variables and then try to echo out each variable like so;
if( isset($noResults)) {
echo $noResults;
} else {
echo '<li>' . '<h2>' . '' . $title . '' . '</h2>' . '<p>' . $link . '</p>' . '<p>' . $description . '</p>' . '</li>';
}
it only echo's out one row matching that query however, If I was to just simple echo out the columns like so;
echo $results['Title'];
echo $results['Link'];
echo $results['Description'];
all rows matching the query will be displayed..
I'm not sure why this is happening. If someone could help me out that would be great!
You need to use a loop:
$k = mysql_real_escape_string($_GET['k']); // Get search query
$select = mssql_query("SELECT * FROM search WHERE Title Like '%" . $k . "%'");
if( mssql_num_rows($select) < 1) {
$noResults = 'No results found for <b>' . $k . '</b>, <label for="k">Please try again.</label>';
} else {
$results= array();
while ($result = mssql_fetch_array($select)) {
$results[]= $result;
}
}
if( isset($noResults)) {
echo $noResults;
} else {
echo "<ul>";
foreach($results as $result){
echo '<li>' . '<h2>' . '' . $result['title'] . '' . '</h2>' . '<p>' . $result['link'] . '</p>' . '<p>' . $result['description'] . '</p>' . '</li>';
}
echo "</ul>";
}
Do you execute the output in the while-loop?
If you execute the while-loop and call the echo after that, each resultset will overwrite the previous, and the echo will output the last resultset which was fetched.
If you call the echo in the Loop, every result set will generate "his own" output line.
If you want to hold every resultset in a variable you can use an array, which is declared in front of the loop and gets filled in the loop.
a few things are not clear from your question, but i am assuming that you are echo'ing the variables outside the loop since you are checking isset($noResults). that means you are reassigning the variables with new values in each loop of while. so ultimately you get the last one assigned to the variables. you have to either use an array to hold the values or echo it with in the loop.
foreach ($data['tests'] as $testname => $tests) {
echo "<h1>Extraction $testname Tests</h1>\n";
$function = $testfunctions[$testname];
echo "<ul>";
foreach ($tests as $test) {
echo "<li>" . $test['description'] . ' ... ';
$extracted = $extractor->$function($test['text']);
if ($test['expected'] == $extracted) {
echo " <span style='color: green'>passed.</span></li>";
} else {
echo " <span style='color: red'>failed.</span>";
echo "<pre>Original: " . htmlspecialchars($test['text']) . "\nExpected: " . print_r($test['expected'], true) . "\nActual : " . print_r($extracted, true) . "</pre>";
}
echo "</li>";
}
echo "</ul>";}
I keep getting the error:
Warning: Invalid argument supplied for
foreach() in
C:\xampp\htdocs\test\runtests.php on
line 49
p.s. the beginning of the code is line 49, so the probelm starts with the foreach statment.
Whenever i see that, it tends to mean that the thing i'm trying to iterate through isn't an array.
Check $data['tests'] (and each inner $tests) to make sure it's not null/unset/empty, and that it's something iterable like an array. Also keep in mind that older versions of PHP (before 5.0?) don't do iterable objects very well.
One of the elements in $data["tests"] is probably not an array.
Add this before the foreach:
if (is_array($tests))
foreach ($tests as $test) {...