i have a set of predefined array contains strings and words.I am trying to check whether my string contains at least one word from that array.
$array = array("PHP code tester Sandbox Online","abcd","defg" );
$string = 'code testy';//code is already in that array
i tried many ways,but not correct solution
first method
$i = count(array_intersect($array, explode(" ", preg_replace("/[^A-Za-z0-9' -]/", "", $string))));
echo ($i) ? "found ($i)" : "not found";
second method
if (stripos(json_encode($array),$string) !== false) { echo "found";}
else{ echo "not found";}
I suppose you are looking for a match which is any of the words.
$array = array("PHP code tester Sandbox Online","abcd","defg" );
$string = 'code|testy';
foreach ($array as $item ) {
if(preg_match("/\b{$string}\b/i", $item)) {
var_dump( $item );
}
}
You have to iterate over the array and test each one of the cases separately, first 'code', then 'testy', or whatever you want. If you json_encode, even if you trim both of strings to do this comparaison, the return will be not found.
But in the first string if you had like this
$array = array("PHP code testy Sandbox Online","abcd","defg" );
$string = 'code testy';//code is already in that array
you will get surely a "found" as return.
if (stripos(trim(json_encode($array)),trim($string)) !== false) { echo "found";}
else{ echo "not found";}
You could use explode() to get an array from the strings and then go through each of them.
$array = array("PHP code tester Sandbox Online","abcd","defg" );
$string = 'code testy';
foreach(explode(' ', $string) as $key => $value) {
foreach($array as $arrKey => $arrVal) {
foreach(explode(' ', $arrVal) as $key => $str) {
if ($value == $str) {
echo $str . ' is in array';
}
}
}
}
Hi I'm trying to check if a list of words (or any one of them) exists in a string. I tried some of the examples i found here, but i still can't get it to work correctly.
Any ideas what I'm doing wrong?
$ss3="How to make a book";
$words = array ("book","paper","page","sheet");
if (in_array($ss3, $words) )
{
echo "found it";
}
Loop over your array, check for each element if it exists in the string
$ss3="How to make a book";
$words = array ("book","paper","page","sheet");
foreach($words as $w){
if (stristr($ss3,$w)!==false)
echo "found $w \n";
}
Fiddle
You need to explode() your $ss3 string and then compare each item with your $words with loop
manual for in_array - http://php.net/manual/en/function.in-array.php
manual for explode() - http://php.net/manual/ru/function.explode.php
$matches = array();
$items = explode(" ",$ss3);
foreach($items as $item){
if(in_array($item, $words)){
$matches[] = $item; // Match found, storing in array
}
}
var_dump($matches); // To see all matches
This is how you will check for existence of a word from a string. Also remember that you must first convert the string to lowercase and then explode it.
$ss3="How to make a book";
$ss3 = strtolower($ss3);
$ss3 = explode(" ", $ss3);
$words = array ("book","paper","page","sheet");
if (in_array($ss3, $words) )
{
echo "found it";
}
Cheers!
You could use regular expressions. It would look something like this:
$ss3 = "How to make a book";
if (preg_match('/book/',$ss3))
echo 'found!!';
in_array will only check the complete string value in an array.
Now you can try this:
$string = 'How to make a book';
$words = array("book","paper","page","sheet");
foreach ($words as $val) {
if (strpos($string, $val) !== FALSE) {
echo "Match found";
return true;
}
}
echo "Not found!";
You can use str_word_count along with array_intersect like as
$ss3="How to make a book";
$words = array ("book","paper","page","sheet");
$new_str_array = str_word_count($ss3,1);
$founded_words = array_intersect($words,$new_str_array);
if(count($founded_words) > 0){
echo "Founded : ". implode(',',$founded_words);
}else{
echo "Founded Nothing";
}
Demo
This code will help you for better answer
<?php
$str="Hello World Good";
$word=array("Hello","Good");
$strArray=explode(" ",$str);
foreach($strArray as $val){
if(in_array($val,$word)){
echo $val."<br>";
}
}
?>
I have a string that looks like this "thing aaaa" and I'm using explode() to split the string into an array containing all the words that are separated by space. I execute something like this explode (" ", $string) .
I'm not sure why but the result is : ["thing","","","","aaaa"]; Does anyone have an idea why I get the three empty arrays in there ?
EDIT : This is the function that I'm using that in :
public function query_databases() {
$arguments_count = func_num_args();
$status = [];
$results = [];
$split =[];
if ($arguments_count > 0) {
$arguments = func_get_args();
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($arguments));
foreach ($iterator as $key => $value) {
array_push($results, trim($value));
}
unset($value);
$filtered = $this->array_unique_values($results, "String");
foreach ($filtered as $key => $string) {
if (preg_match('/\s/',$string)) {
array_push($split, preg_split("/\s/", $string));
} else {
array_push($split, $string);
}
}
unset($string);
echo "Terms : ".json_encode($split)."<br>";
foreach ($filtered as $database) {
echo "Terms : ".json_encode()."<br>";
$_action = $this->get_database($database);
echo "Action : ".json_encode($_action)."<br>";
}
unset($database);
} else {
return "[ Databases | Query Databases [ Missing Arguments ] ]";
}
}
It might be something else that messes up the result ?!
If you are looking to create an array by spaces, you might want to consider preg_split:
preg_split("/\s+/","thing aaaa");
which gives you array ("thing","aaaa");
Taken from here.
try this:
$str = str_replace(" ", ",", $string);
explode(",",$str);
This way you can see if it is just the whitespace giving you the problem if you output 4 commas, it's because you have 4 whitespaces.
As #Barmar said, my trim() just removes all the space before and after the words, so that is why I had more values in the array than I should have had.
I found that this little snippet : preg_replace( '/\s+/', ' ', $value ) ; replacing my trim() would fix it :)
I have this variable :
$key = 'text1-text2-text3-021-039-947-927-827-927';
$key = explode ('-', $key);
first three of $key ($key[0]...$key[2]) always contains text and it won't be a problem to me. but the rest of it is dynamic.
in that case, the rest of it contains 6 more variables : $key[3]...$key[8] but some other case, it can be 10, 9, 2, etc based on user's input.
now the question is... how to echo each key by using FOREACH loop starting with $key[3]? not $key[0]. thanks.
Try like this:
for($i=3; $i<count($key); $i++){
echo $key[$i];
}
Try this code you have the key and value
$key = 'text1-text2-text3-021-039-947-927-827-927';
$key = explode ('-', $key);
foreach ($key as $k=>$val)
{
if($k>=3)
{
echo "key=".$k ."and value=".$val;
echo '<br />';
}
}
try this snippet
$isFirst = 1
foreach ($arr as &$value)
{
if ($isFirst == 1)
{
$isFirst = 0;
}
else
{
// do code here
}
}
why not use For Loop?
for ($i = 1; $i <= 10; $i++){....}
$key = 'text1-text2-text3-021-039-947-927-827-927';
$key = explode ('-', $key);
foreach($key as $count=>$values){
if($count>=3) {
echo $values."<br/>";
}
}
output=>
021
039
947
927
827
927
This may not be the best answer, but just the heck of it (and because I wanted to provide yet another solution using foreach):
$key = 'text1-text2-text3-021-039-947-927-827-927';
$key = explode ('-', $key);
array_shift($key); //remove first element..
array_shift($key); //remove second element..
array_shift($key); //remove third element..
//there you go..
foreach($key as ..)
I am writing a SQL query creator using some parameters. In Java, it's very easy to detect the last element of an array from inside the for loop by just checking the current array position with the array length.
for(int i=0; i< arr.length;i++){
boolean isLastElem = i== (arr.length -1) ? true : false;
}
In PHP they have non-integer indexes to access arrays. So you must iterate over an array using a foreach loop. This becomes problematic when you need to take some decision (in my case to append or/and parameter while building query).
I am sure there must be some standard way of doing this.
How do you solve this in PHP?
It sounds like you want something like this:
$numItems = count($arr);
$i = 0;
foreach($arr as $key=>$value) {
if(++$i === $numItems) {
echo "last index!";
}
}
That being said, you don't -have- to iterate over an "array" using foreach in php.
You could get the value of the last key of the array using end(array_keys($array)) and compare it to the current key:
$last_key = end(array_keys($array));
foreach ($array as $key => $value) {
if ($key == $last_key) {
// last element
} else {
// not last element
}
}
Note: This doesn't work because calling next() advances the array pointer, so you're skipping every other element in the loop
why so complicated?
foreach($input as $key => $value) {
$ret .= "$value";
if (next($input)==true) $ret .= ",";
}
This will add a , behind every value except the last one!
When toEnd reaches 0 it means it is at the last iteration of the loop.
$toEnd = count($arr);
foreach($arr as $key=>$value) {
if (0 === --$toEnd) {
echo "last index! $value";
}
}
The last value is still available after the loop, so if you just want to use it for more stuff after the loop this is better:
foreach($arr as $key=>$value) {
//something
}
echo "last index! $key => $value";
If you do not want to treat the last value as special inside loops. This should be faster if you have large arrays. (If you reuse the array after the loop inside the same scope you have to "copy" the array first).
//If you use this in a large global code without namespaces or functions then you can copy the array like this:
//$array = $originalArrayName; //uncomment to copy an array you may use after this loop
//end($array); $lastKey = key($array); //uncomment if you use the keys
$lastValue = array_pop($array);
//do something special with the last value here before you process all the others?
echo "Last is $lastValue", "\n";
foreach ($array as $key => $value) {
//do something with all values before the last value
echo "All except last value: $value", "\n";
}
//do something special with the last value here after you process all the others?
echo "Last is $lastValue", "\n";
And to answer your original question "in my case to append or/and parameter while building query"; this will loop over all the values, then join them together to a string with " and " between them but not before the first value or after the last value:
$params = [];
foreach ($array as $value) {
$params[] = doSomething($value);
}
$parameters = implode(" and ", $params);
There are already many answers, but it's worth to look into iterators as well, especially as it has been asked for a standard way:
$arr = range(1, 3);
$it = new CachingIterator(new ArrayIterator($arr));
foreach($it as $key => $value)
{
if (!$it->hasNext()) echo 'Last:';
echo $value, "\n";
}
You might find something that does work more flexible for other cases, too.
One way could be to detect if the iterator has next. If there is no next attached to the iterator it means you are in the last loop.
foreach ($some_array as $element) {
if(!next($some_array)) {
// This is the last $element
}
}
SINCE PHP 7.3 :
You could get the value of the last key of the array using array_key_last($array) and compare it to the current key:
$last_key = array_key_last($array);
foreach ($array as $key => $value) {
if ($key == $last_key) {
// last element
} else {
// not last element
}
}
to get first and last element from foreach array
foreach($array as $value) {
if ($value === reset($array)) {
echo 'FIRST ELEMENT!';
}
if ($value === end($array)) {
echo 'LAST ITEM!';
}
}
So, if your array has unique array values, then determining last iteration is trivial:
foreach($array as $element) {
if ($element === end($array))
echo 'LAST ELEMENT!';
}
As you see, this works if last element is appearing just once in array, otherwise you get a false alarm. In it is not, you have to compare the keys (which are unique for sure).
foreach($array as $key => $element) {
end($array);
if ($key === key($array))
echo 'LAST ELEMENT!';
}
Also note the strict coparision operator, which is quite important in this case.
Don't add a comma after the last value:
The array:
$data = ['lorem', 'ipsum', 'dolor', 'sit', 'amet'];
The function:
$result = "";
foreach($data as $value) {
$resut .= (next($data)) ? "$value, " : $value;
}
The result:
print $result;
lorem, ipsum, dolor, sit, amet
You can still use that method with associative arrays:
$keys = array_keys($array);
for ($i = 0, $l = count($array); $i < $l; ++$i) {
$key = $array[$i];
$value = $array[$key];
$isLastItem = ($i == ($l - 1));
// do stuff
}
// or this way...
$i = 0;
$l = count($array);
foreach ($array as $key => $value) {
$isLastItem = ($i == ($l - 1));
// do stuff
++$i;
}
Assuming you have the array stored in a variable...
foreach($array as $key=>$value)
{
echo $value;
if($key != count($array)-1) { echo ", "; }
}
If you need to do something for every element except either the first or the last and only if there is more than one element in the array, I prefer the following solution.
I know there are many solutions above and posted months/one year before mine, but this is something I feel is fairly elegant in its own right. The check every loop is also a boolean check as opposed to a numeric "i=(count-1)" check, which may allow for less overhead.
The structure of the loop may feel awkward, but you can compare it to the ordering of thead (beginning), tfoot (end), tbody (current) in HTML table tags.
$first = true;
foreach($array as $key => $value) {
if ($first) {
$first = false;
// Do what you want to do before the first element
echo "List of key, value pairs:\n";
} else {
// Do what you want to do at the end of every element
// except the last, assuming the list has more than one element
echo "\n";
}
// Do what you want to do for the current element
echo $key . ' => ' . $value;
}
For instance, in web development terms, if you want to add a border-bottom to every element except the last in an unordered list (ul), then you can instead add a border-top to every element except the first (the CSS :first-child, supported by IE7+ and Firefox/Webkit supports this logic, whereas :last-child is not supported by IE7).
You can feel free to reuse the $first variable for each and every nested loop as well and things will work just fine since every loop makes $first false during the first process of the first iteration (so breaks/exceptions won't cause issues).
$first = true;
foreach($array as $key => $subArray) {
if ($first) {
$string = "List of key => value array pairs:\n";
$first = false;
} else {
echo "\n";
}
$string .= $key . '=>(';
$first = true;
foreach($subArray as $key => $value) {
if ($first) {
$first = false;
} else {
$string .= ', ';
}
$string .= $key . '=>' . $value;
}
$string .= ')';
}
echo $string;
Example output:
List of key => value array pairs:
key1=>(v1_key1=>v1_val1, v1_key2=>v1_val2)
key2=>(v2_key1=>v2_val1, v2_key2=>v2_val2, v2_key3=>v2_val3)
key3=>(v3_key1=>v3_val1)
This should be the easy way to find the last element:
foreach ( $array as $key => $a ) {
if ( end( array_keys( $array ) ) == $key ) {
echo "Last element";
} else {
echo "Just another element";
}
}
Reference : Link
I have a strong feeling that at the root of this "XY problem" the OP wanted just implode() function.
As your intention of finding the EOF array is just for the glue. Get introduced to the below tactic. You need not require the EOF:
$given_array = array('column1'=>'value1',
'column2'=>'value2',
'column3'=>'value3');
$glue = '';
foreach($given_array as $column_name=>$value){
$where .= " $glue $column_name = $value"; //appending the glue
$glue = 'AND';
}
echo $where;
o/p:
column1 = value1 AND column2 = value2 AND column3 = value3
How about using "end"?
http://php.net/manual/en/function.end.php
It sounds like you want something like this:
$array = array(
'First',
'Second',
'Third',
'Last'
);
foreach($array as $key => $value)
{
if(end($array) === $value)
{
echo "last index!" . $value;
}
}
$array = array("dog", "rabbit", "horse", "rat", "cat");
foreach($array as $index => $animal) {
if ($index === array_key_first($array))
echo $animal; // output: dog
if ($index === array_key_last($array))
echo $animal; // output: cat
}
you can do a count().
for ($i=0;$i<count(arr);$i++){
$i == count(arr)-1 ? true : false;
}
or if you're looking for ONLY the last element, you can use end().
end(arr);
returns only the last element.
and, as it turns out, you CAN index php arrays by integers. It's perfectly happy with
arr[1];
You could also do something like this:
end( $elements );
$endKey = key($elements);
foreach ($elements as $key => $value)
{
if ($key == $endKey) // -- this is the last item
{
// do something
}
// more code
}
I kinda like the following as I feel it is fairly neat. Let's assume we're creating a string with separators between all the elements: e.g. a,b,c
$first = true;
foreach ( $items as $item ) {
$str = ($first)?$first=false:", ".$item;
}
Here's my solution:
Simply get the count of your array, minus 1 (since they start in 0).
$lastkey = count($array) - 1;
foreach($array as $k=>$a){
if($k==$lastkey){
/*do something*/
}
}
foreach ($array as $key => $value) {
$class = ( $key !== count( $array ) -1 ) ? " class='not-last'" : " class='last'";
echo "<div{$class}>";
echo "$value['the_title']";
echo "</div>";
}
Reference
If it is a single dimensional array you can do this to keep it short and sweet:
foreach($items as $idx => $item) {
if (!isset($items[$idx+1])) {
print "I am last";
}
}
Here's another way you could do it:
$arr = range(1, 10);
$end = end($arr);
reset($arr);
while( list($k, $v) = each($arr) )
{
if( $n == $end )
{
echo 'last!';
}
else
{
echo sprintf('%s ', $v);
}
}
If I understand you, then all you need is to reverse the array and get the last element by a pop command:
$rev_array = array_reverse($array);
echo array_pop($rev_array);
You could also try this to make your query... shown here with INSERT
<?php
$week=array('one'=>'monday','two'=>'tuesday','three'=>'wednesday','four'=>'thursday','five'=>'friday','six'=>'saturday','seven'=>'sunday');
$keys = array_keys($week);
$string = "INSERT INTO my_table ('";
$string .= implode("','", $keys);
$string .= "') VALUES ('";
$string .= implode("','", $week);
$string .= "');";
echo $string;
?>
For SQL query generating scripts, or anything that does a different action for the first or last elements, it is much faster (almost twice as fast) to avoid using unneccessary variable checks.
The current accepted solution uses a loop and a check within the loop that will be made every_single_iteration, the correct (fast) way to do this is the following :
$numItems = count($arr);
$i=0;
$firstitem=$arr[0];
$i++;
while($i<$numItems-1){
$some_item=$arr[$i];
$i++;
}
$last_item=$arr[$i];
$i++;
A little homemade benchmark showed the following:
test1: 100000 runs of model morg
time: 1869.3430423737 milliseconds
test2: 100000 runs of model if last
time: 3235.6359958649 milliseconds
Another way to go is to remember the previous loop cycle result and use that as the end result:
$result = $where = "";
foreach ($conditions as $col => $val) {
$result = $where .= $this->getAdapter()->quoteInto($col.' = ?', $val);
$where .= " AND ";
}
return $this->delete($result);