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On gists
PHP Curl to check if url is alive
•
PHP
curl_example.php #
<?php
function check_alive($url, $timeout = 10, $successOn = array(200, 301)) {
$ch = curl_init($url);
// Set request options
curl_setopt_array($ch, array(
CURLOPT_FOLLOWLOCATION => false,
CURLOPT_NOBODY => true,
CURLOPT_TIMEOUT => $timeout,
CURLOPT_USERAGENT => "page-check/1.0"
));
// Execute request
curl_exec($ch);
// Check if an error occurred
if(curl_errno($ch)) {
curl_close($ch);
return false;
}
// Get HTTP response code
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Page is alive if 200 OK is received
//return $code;
return in_array( $code, $successOn );
}
$checks = array(
'http://www.google.co.uk',
'http://www.facebook.com',
'http://www.bbc.co.uk',
'http://photogabble.co.uk',
'http://youtube.com'
);
foreach($checks as $check)
{
echo $check . ' is ' . ( (check_alive($check) ) ? 'Alive' : 'Dead' ) . "\n";
}
On gists
Download via Iframe // wo refresh
•
PHP
Downlad file via iframe (no refr #
<a href="" id="csv-export">export</a>
<iframe id="downloadIframe" src="" style="height: 0px; width: 0px; display: none;"></iframe>
<script>
$("#csv-export").click(function(e){
e.preventDefault();
oIFrm = document.getElementById('downloadIframe');
oIFrm.src = '' // URL to download file -- via php download headers;
});
</script>
On gists
Convert UTF - win1250 - CSV
•
PHP
Convert utf-8 to win1250 - csv e #
<?php
$out = iconv('utf-8', 'windows-1250//TRANSLIT', $out);
$filename = 'katalog-export___' . date('YmdHis') . '.csv';
header('Content-Encoding: windows-1250');
header('Content-type: text/csv; charset=windows-1250');
header('Content-Disposition: attachment; filename=' . $filename);
//echo "\xEF\xBB\xBF"; // UTF-8 BOM
echo $out;
exit(0);
?>
On gists
Nette CSV response
•
Nette
NetteCsvResponse.php #
<?php
namespace Nette\Application\Responses;
use Nette;
/**
* CSV download response.
* Under New BSD license.
*
* @property-read string $name
* @property-read string $contentType
* @package Nette\Application\Responses
*/
class CsvResponse extends Nette\Object implements Nette\Application\IResponse
{
/** @var array */
private $data;
/** @var string */
private $name;
/** @var bool */
public $addHeading;
/** @var string */
public $glue;
/** @var string */
private $charset;
/** @var string */
private $contentType;
/**
* @param array[]|\Traversable $data
* @param string $name
* @param bool $addHeading
* @param string $glue
* @param string $charset
* @param string $contentType
* @throws \InvalidArgumentException
*/
public function __construct($data, $name = NULL, $addHeading = TRUE, $glue = ';', $charset = 'utf-8', $contentType = NULL)
{
if (is_array($data)) {
if (count($data) && !is_array(reset($data))) {
$invalid = TRUE;
}
} elseif (!$data instanceof \Traversable) {
$invalid = TRUE;
}
if (isset($invalid)) {
throw new \InvalidArgumentException(__CLASS__.": data must be array of arrays or instance of Traversable.");
}
if (empty($glue) || preg_match('/^[\n\r]+$/s', $glue) || $glue === '"') {
throw new \InvalidArgumentException(__CLASS__.": glue cannot be an empty or reserved character.");
}
$this->data = $data;
$this->name = $name;
$this->addHeading = $addHeading;
$this->glue = $glue;
$this->charset = $charset;
$this->contentType = $contentType ? $contentType : 'text/csv';
}
/**
* Returns the file name.
* @return string
*/
final public function getName()
{
return $this->name;
}
/**
* Returns the MIME content type of a downloaded content.
* @return string
*/
final public function getContentType()
{
return $this->contentType;
}
/**
* Sends response to output.
* @param Nette\Http\IRequest $httpRequest
* @param Nette\Http\IResponse $httpResponse
*/
public function send(Nette\Http\IRequest $httpRequest, Nette\Http\IResponse $httpResponse)
{
$httpResponse->setContentType($this->contentType, $this->charset);
if (empty($this->name)) {
$httpResponse->setHeader('Content-Disposition', 'attachment');
} else {
$httpResponse->setHeader('Content-Disposition', 'attachment; filename="' . $this->name . '"');
}
$data = $this->formatCsv();
$httpResponse->setHeader('Content-Length', strlen($data));
print $data;
}
protected function formatCsv()
{
if (empty($this->data)) {
return '';
}
$csv = array();
if (!is_array($this->data)) {
$this->data = iterator_to_array($this->data);
}
$firstRow = reset($this->data);
if ($this->addHeading) {
if (!is_array($firstRow)) {
$firstRow = iterator_to_array($firstRow);
}
$labels = array();
foreach (array_keys($firstRow) as $key) {
$labels[] = ucfirst(str_replace(array("_", '"'), array(' ', '""'), $key));
}
$csv[] = '"'.join('"'.$this->glue.'"', $labels).'"';
}
foreach ($this->data as $row) {
if (!is_array($row)) {
$row = iterator_to_array($row);
}
foreach ($row as &$value) {
$value = str_replace(array('"'), array('""'), $value);
}
$csv[] = '"'.join('"'.$this->glue.'"', $row).'"';
}
return join("\r\n", $csv);
}
}
On gists
Validation date & time
•
PHP
PHP: Date validation (datetime) #
function validateDate($date, $format = 'Y-m-d H:i:s')
{
$d = DateTime::createFromFormat($format, $date);
return $d && $d->format($format) == $date;
}
var_dump(validateDate('2012-02-28 12:12:12')); # true
var_dump(validateDate('2012-02-30 12:12:12')); # false
var_dump(validateDate('2012-02-28', 'Y-m-d')); # true
var_dump(validateDate('28/02/2012', 'd/m/Y')); # true
var_dump(validateDate('30/02/2012', 'd/m/Y')); # false
var_dump(validateDate('14:50', 'H:i')); # true
var_dump(validateDate('14:77', 'H:i')); # false
var_dump(validateDate(14, 'H')); # true
var_dump(validateDate('14', 'H')); # true
var_dump(validateDate('2012-02-28T12:12:12+02:00', 'Y-m-d\TH:i:sP')); # true
# or
var_dump(validateDate('2012-02-28T12:12:12+02:00', DateTime::ATOM)); # true
var_dump(validateDate('Tue, 28 Feb 2012 12:12:12 +0200', 'D, d M Y H:i:s O')); # true
# or
var_dump(validateDate('Tue, 28 Feb 2012 12:12:12 +0200', DateTime::RSS)); # true
var_dump(validateDate('Tue, 27 Feb 2012 12:12:12 +0200', DateTime::RSS)); # false
# ...
On gists
Input limiter
•
jQuery
jQuery-plugins
JS: Input limiter #
function($) {
$.fn.extend( {
limiter: function(limit, elem) {
$(this).on("keyup focus", function() {
setCount(this, elem);
});
function setCount(src, elem) {
var chars = src.value.length;
if (chars > limit) {
src.value = src.value.substr(0, limit);
chars = limit;
}
elem.html( limit - chars );
}
setCount($(this)[0], elem);
}
});
})(jQuery);
On gists
Preload images
•
jQuery
jQuery-plugins
JS: Preload Images #
$.preloadImages = function() {
for(var i = 0; i<arguments.length; i++) {
$("<img />").attr("src", arguments[i]);
}
}
$(document).ready(function() {
$.preloadImages("hoverimage1.jpg","hoverimage2.jpg");
});
On gists
Sort a list alphabetically
•
JavaScript
jQuery
jQuery-plugins
JS: Sort a list alphabetically #
$(function() {
$.fn.sortList = function() {
var mylist = $(this);
var listitems = $('li', mylist).get();
listitems.sort(function(a, b) {
var compA = $(a).text().toUpperCase();
var compB = $(b).text().toUpperCase();
return (compA < compB) ? -1 : 1;
});
$.each(listitems, function(i, itm) {
mylist.append(itm);
});
}
$("ul#demoOne").sortList();
});