I'm trying to do a scrape with SimpleHTMLDom and seem to be running in to a problem.
My code is as follows :
$table = $html->find('table',0);
$theData = array();
foreach(($table->find('tr')) as $row) {
$rowData = array();
foreach($row->find('td') as $cell) {
$rowData[] = $cell->innertext;
}
$theData[] = $rowData;
}
function array_find($needle, array $haystack)
{
foreach ($haystack as $key => $value) {
if (false !== stripos($needle, $value)) {
return $key;
}
}
return false;
}
$searchString = "hospitalist";
$position = array_find($searchString, $theData);
echo ($position);
Which yields the following error:
Warning: stripos() [function.stripos]: needle is not a string or an integer in C:\xampp\htdocs\main.php on line 85
What am I doing wrong?
You have the order of the actual parameters reversed in your call to stripos. See http://us3.php.net/manual/en/function.stripos.php. Just reverse the order of the arguments and that error should be fixed.
Change:
if (false !== stripos($needle, $value)) {
to
if (false !== stripos($value, $needle)) {
From the docs, you should be passing in the needle second, not first. Try this:
function array_find($needle, array $haystack)
{
foreach ($haystack as $key => $value) {
if (false !== stripos($value, $needle)) {
return $key;
}
}
return false;
}
The message is referring to the function argument of stripos and not your variable named $needle.
int stripos ( string $haystack , string $needle [, int $offset = 0 ] )
It is actually complaining about the needle $value
Related
I am trying to loop through a string that contains html from a scraped webpage. First I look to return all links that contain the word "result" and then I would like to organize all the links that contain one of four cases, "base", "second", "third" or "latest" and create a fluid array.
Below is what I have come up with but it returns "Warning: strpos(): needle is not a string or an integer". I cannot seem to get the array cases to work.
Any help would be greatly appreciated. Thank you
$key = "results";
$reportKey = array("base", "second", "third","latest");
$keyArray = array();
foreach($html->find('a') as $element){
if (strpos($element->href, $key) !== false){
if (strpos($element->href, $reportKey) !== false){
$keyArray[] = $element->href;
}
}
}
echo "<pre>" . print_r($keyArray) . "</pre> ";
You can't use an array as a needle in strpos. Change second if to:
if (str_replace($reportKey, "", $element->href) === $element->href) {
$keyArray[] = $element->href;
}
strpos() does not allow more than one needle, you can do this:
$key = "results";
$reportKey = array("base", "second", "third","latest");
$keyArray = array();
foreach($html->find('a') as $element)
{
if (strpos($element->href, $key) !== false){
if (
strpos($element->href, $reportKey[0]) !== false
|| strpos($element->href, $reportKey[1]) !== false
|| strpos($element->href, $reportKey[2]) !== false
|| strpos($element->href, $reportKey[3]) !== false
){
$keyArray[] = $element->href;
}
}
}
echo "<pre>" . print_r($keyArray) . "</pre> ";
You could also do your own function, this is only an example:
function multi_strpos($string, $check, $getResults = false)
{
$result = array();
$check = (array) $check;
foreach ($check as $s)
{
$pos = strpos($string, $s);
if ($pos !== false)
{
if ($getResults)
{
$result[$s] = $pos;
}
else
{
return $pos;
}
}
}
return empty($result) ? false : $result;
}
A solution using array_map() and in_array():
$key = 'results';
$reportKey = ['base', 'second', 'third', 'latest'];
$keyArray = [];
foreach($html->find('a') as $element) {
if (false !== strpos($element->href, $key)) {
// I changed the condition here
$pos = array_map(fn($k) => strpos($element->href, $k) !== false, $reportKey);
if (in_array(true, $pos)){
$keyArray[] = $element->href;
}
}
}
$pos will be an array containing booleans based on matches between $element->href and $reportKey items.
Then we check with in_array() if it matched at least one time.
hi i have an array of about 20/30 items big.
i need to have it loop threw the array and echo out only the items with the text p1 in them.
the array looks like so
"lolly","lollyp1","top","topp1","bum","bump1","gee","geep1"
and so on
i have tried to use something like this
foreach ($arr as $value) {
$needle = htmlspecialchars($_GET["usr"]);
$ret = array_keys(array_filter($arr, function($var) use ($needle){
return strpos($var, $needle) !== false;
}));
but all this gives me is a blank page or 1s
how can i have it echo out the items with p1 in them ?
Try This:
$needle = htmlspecialchars($_GET["usr"]);
$rtnArray = array();
foreach ($arr as $value) {
$rtnArray = strpos($value,$needle);
};
return $rtnArray;
If your trying to write directly to the page the lose the $rtnarray and echo:
$needle = htmlspecialchars($_GET["usr"]);
foreach ($arr as $value) {
echo strpos($value,$needle);
};
To only show ones with 'p1' then filter:
$needle = htmlspecialchars($_GET["usr"]);
foreach ($arr as $value) {
$temp = strpos($value,$needle);
if($temp > 1){
echo $value;
}
};
Using a direct loop with string-comparison would be a simple way to go here:
$needle = $_GET['usr'];
$matches = array();
foreach ($arr as $key => $value) {
if (strpos($value, $needle) !== false) {
$matches[] = $key;
}
}
The use of array_filter() in your post should work, pending the version of PHP you're using. Try updating to use a separate / defined function:
function find_needle($var) {
global $needle;
return strpos($var, $needle) !== false;
}
$ret = array_keys(array_filter($arr, 'find_needle'));
Codepad Example of the second sample
I'm trying to validate a string to an array of numbers. If the string only contains numbers then the function should validate, but in_array isn't working, any suggestions?
$list = array(0,1,2,3,4,5,6,7,8,9);
$word = 'word';
$split = str_split($word);
foreach ($split as $s) {
if (!in_array($s, $list)) {
print 'asdf';
}
}
here is the class:
class Validate_Rule_Whitelist {
public function validate($data, $whitelist) {
if (!Validate_Rule_Type_Character::getInstance()->validate($data)) {
return false;
}
$invalids = array();
$data_array = str_split($data);
foreach ($data_array as $k => $char) {
if (!in_array($char, $whitelist)) {
$invalids[] = 'Invalid character at position '.$k.'.';
}
}
if (!empty($invalids)) {
$message = implode(' ', $invalids);
return $message;
}
return true;
}
}
in_array comparison with loosely typed values is somewhat strange. What would work in your case is:
$list = array('0','1','2','3','4','5','6','7','8','9');
$word = 'word';
$split = str_split($word);
foreach ($split as $s) {
if (!in_array($s, $list, true)) {
print 'asdf';
}
}
This compares strings with strings and results in no surprises.
But, as noted in the comments already, this is quite wrong way to do things and it is much better to use filter_var() or regular expressions** to achieve what you're trying.
it's ugly as sin but it works, no elegant solution here, just a double loop, if you see any problems please let me know
$match = array();
foreach ($data_array as $k => $char) {
foreach ($whitelist as $w) {
if (!isset($match[$k])) {
if ($char === $w) {
$match[$k] = true;
}
}
}
if (!isset($match[$k]) || $match[$k] !== true) {
$invalids[$k] = 'Invalid character at position '.$k.'.';
}
}
Something along the lines of this should work:
<?php
$validate_me = '123xyz';
if(preg_match("/[^0-9]/", $validate_me, $matches))
print "non-digit detected";
?>
update: add the $type = gettype ... settype($char, $type) to allow === to function correctly when checking for integers
foreach ($data_array as $k => $char) {
foreach ($whitelist as $w) {
if (!isset($match[$k])) {
$type = gettype($w);
if (gettype($char) !== $type) {
settype($char, $type);
}
if ($char === $w) {
$match[$k] = true;
}
}
}
...
I have a multidimensional array like this:
$a['bla1']['blub1']="test123";
$a['bla1']['blub2']="test1234";
$a['bla1']['blub3']="test12345";
$a['bla2']['blub1']="test123456";
$a['bla2']['blub2']="test12344e45";
$a['bla2']['blub3']="test12345335";
How to search by value and get back bla1 or bla2? I don't need the subkey, only the key.
try this:
function searcharray($a, $value)
{
foreach($a as $key1 => $keyid)
{
foreach($keyid as $key => $keyid2)
{
if ( $keyid2 === $value )
return $key.','.$key1;
}
}
return false;
}
This function recursively searches an array to any depth and returns the main key under which $needle is found:
function get_main_key($arr, $needle) {
$out = FALSE;
foreach ($arr as $key => $value) {
if ($value == $needle) {
$out = $key;
} elseif (is_array($value)) {
$ret = get_main_key($value, $needle);
$out = ( ! empty($ret)) ? $key : $out;
}
}
return $out;
}
I have a array of val which has dynamic strings with underscores. Plus I have a variable $key which contains an integer. I need to match $key with each $val (values before underscore).
I did the following way:
<?php
$key = 2; //always a dynamic number
$val = array('3_33', '2_55'); //always a dynamic string with underscore
if(in_array($key, $val)) {
echo 'Yes';
}
else
{
echo 'No';
}
?>
Though this code works fine, I want to know if its a correct way or suggest some better alternative.
use this function for regex match from php.net
function in_array_match($regex, $array) {
if (!is_array($array))
trigger_error('Argument 2 must be array');
foreach ($array as $v) {
$match = preg_match($regex, $v);
if ($match === 1) {
return true;
}
}
return false;
}
and then change your code to use this function like this:
$key = 2; //always a dynamic number
$val = array('3_33', '2_55'); //always a dynamic string with underscore
if(in_array_match($key."_*", $val)) {
echo 'Yes';
}
else
{
echo 'No';
}
This should work :
foreach( $val as $v )
{
if( strpos( $v , $key .'_' ) === true )
{
echo 'yes';
}
else {
echo 'no';
}
}
you can use this
function arraySearch($find_me,$array){
$array2 =array();
foreach ($array as $value) {
$val = explode('_',$value);
$array2[] =$val[0];
}
$Key = array_search($find_me, $array2);
$Zero = in_array($find_me, $array2);
if($Key == NULL && !$Zero){
return false;
}
return $Key;
}
$key = 2; //always a dynamic number
$val = array('3_33', '2_55'); //always a dynamic string with underscore
$inarray = false;
foreach($val as $v){
$arr = explode("_", $val);
$inarray = $inarray || $arr[0] == $key
}
echo $inarray?"Yes":"No";
The given format is quite unpractically.
$array2 = array_reduce ($array, function (array $result, $item) {
list($key, $value) = explode('_', $item);
$result[$key] = $value;
return $result;
}, array());
Now you can the existence of your key just with isset($array2[$myKey]);. I assume you will find this format later in your execution useful too.