Beginning from PHP version 7, it has been made possible to create anonymous classes. Every object in PHP is associated with a class. The anonymous classes can be instantiated to create objects.Example Live DemoOutputDoes the instance belong to parent class? = bool(true)In the above code, a parent class (my_sample_class) has been created, and it has been instantiated with a child class (new class) that inherits from the parent class.We are checking if the instance belongs to the parent class. Since the child class is an extension of the parent class, it returns True as output.

Below is the same code to set encoding for FPDI library−Add new fonts that have the correct alphabets.$pdf->AddFont('DejaVu', '', 'DejaVuSansCondensed.php'); $pdf->SetFont('DejaVu', '', 10, '', false);The following are three possible encodings that are possible.cp1250 (Central Europe) cp1251 (Cyrillic) cp1252 (Western Europe) cp1253 (Greek) cp1254 (Turkish) cp1255 (Hebrew) cp1257 (Baltic) cp1258 (Vietnamese) cp874 (Thai) or ISO-8859-1 (Western Europe) ISO-8859-2 (Central Europe) ISO-8859-4 (Baltic) ISO-8859-5 (Cyrillic) ISO-8859-7 (Greek) ISO-8859-9 (Turkish) ISO-8859-11 (Thai) ISO-8859-15 (Western Europe) ISO-8859-16 (Central Europe) Or KOI8-R (Russian) KOI8-U (Ukrainian)Let us see an example to convert the UTF-8 to cp1250.$str = iconv('UTF-8', 'cp1250', 'zazółcić gęślą jaźń');Note− If the string sent ... Read More

Both get the union of arrays, but array_merge() overwrites duplicate non_numeric keys. Let us now see an example of the array+array−Example Live DemoOutputThis will produce the following output−array(8) {    ["p"]=>    string(3) "150"    ["q"]=>    string(3) "100"    ["r"]=>    string(3) "120"    ["s"]=>    string(3) "110"    ["t"]=>    string(3) "115"    ["u"]=>    string(3) "103"    ["v"]=>    string(3) "105"    ["w"]=>    string(3) "125" }ExampleLet us now see an example of array_merge() in PHP− Live DemoOutputThis will produce the following output−array(8) {    ["p"]=>    string(3) "150"    ["q"]=>    string(3) "100"    ["r"]=>    string(3) "120"    ["s"]=>    string(3) "110"    ["t"]=>    string(3) "115"    ["u"]=>    string(3) "110"    ["v"]=>    string(3) "105"    ["w"]=>    string(3) "100" }

The print and echo are both language constructs to display strings. The echo has a void return type, whereas print has a return value of 1 so it can be used in expressions. The print_r is used to display human-readable information about a variable.ExampleLet us now see an example that displays output using echo, print, and print_r: Live DemoOutputThis will produce the following output−Array... Value = John Value = Jacob Value = Tom Value = Tim Displaying Array Values using print... Value = John Value = Jacob Value = Tom Value = Tim Displaying Array Values using print_r... Array (    [0] => John    [1] => Jacob    [2] => Tom    [3] => Tim )

To return all dates between two dates, the code is as follows −Example Live DemoOutputThis will produce the following output−array(11) {    [0]=>    string(10) "10-11-2019"    [1]=>    string(10) "11-11-2019"    [2]=>    string(10) "12-11-2019"    [3]=>    string(10) "13-11-2019"    [4]=>    string(10) "14-11-2019"    [5]=>    string(10) "15-11-2019"    [6]=>    string(10) "16-11-2019"    [7]=>    string(10) "17-11-2019"    [8]=>    string(10) "18-11-2019"    [9]=>    string(10) "19-11-2019"    [10]=>    string(10) "20-11-2019" }

To reset keys of array elements using PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−array(4) {    ["p"]=>    string(3) "150"    ["q"]=>    string(3) "100"    ["r"]=>    string(3) "120"    ["s"]=>    string(3) "110" } array(4) {    [0]=>    string(3) "150"    [1]=>    string(3) "100"    [2]=>    string(3) "120"    [3]=>    string(3) "110" }ExampleLet us now see another example − Live DemoOutputThis will produce the following output−array(4) {    [8]=>    string(3) "Ben"    [4]=>    string(5) "Kevin"    [7]=>    string(4) "Mark"    [3]=>    string(5) "Hanks" } array(4) {    [0]=>    string(3) "Ben"    [1]=>    string(5) "Kevin"    [2]=>    string(4) "Mark"    [3]=>    string(5) "Hanks" }

To remove the first character of a string in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output −Before removing the first character = Test After removing the first character = estExampleLet us now see another example Live DemoOutputThis will produce the following output−Before removing the first character = Demo After removing the first character = emo

To remove an array element and re-index the array, the code is as follows−Example Live DemoOutputThis will produce the following output−Array with leading and trailing whitespaces... Value = John Value = Jacob Value = Tom Value = Tim Comma separated list... John , Jacob , Tom , Tim Updated Array... Value = John Value = Jacob Value = Tom Value = Tim Updated Array...Re-indexed Value = John Value = Tom Value = Tim

To remove newlines from the string, the code is as follows−Example Live DemoOutputThis will produce the following output−Demo     text for reference Demo text for referenceExampleLet us now see another example − Live DemoOutputThis will produce the following output−Demo     text Demo text

To get parameters from a URL string in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Email = example12@domain.comExampleLet us now see another example − Live DemoOutputThis will produce the following output−Email = demo