To convert a string into a number, the code is as follows−Example Live DemoOutputThis will produce the following output−Number (Converted from String) = 150ExampleLet us now see another example− Live DemoOutputThis will produce the following output−String = 100.56 Number (Converted from String) = 100.56

To convert number to month name in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Displaying date... Date = 2019-11-11 Month = November Displaying updated date... 2019-12-01ExampleLet us now see another example − Live DemoOutputThis will produce the following output −Displaying date... Date = 2019-11-11 Month = November Displaying updated date... 2019-12-01 Month = December

To create a comma-separated list from an array in PHP, 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 = TimExampleLet us now see another example − Live DemoOutputThis will produce the following output−Comma separated list... 100, 200, 300, 400, 500

To get a variable name as a string in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−This is it!ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Val

To re-index an array in PHP, the code is as follows −Example Live DemoOutputThis will produce the following output−Array... Key = 0, Value = 150  Key = 1, Value = 100 Key = 2, Value = 120 Key = 3, Value = 110 Key = 4, Value = 115 Array after re-indexing Key = 2, Value = 150 Key = 3, Value = 100 Key = 4, Value = 120 Key = 5, Value = 110 Key = 6, Value = 115ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Array... Key = a, Value = 150 Key = b, Value = 100 Key = c, Value = 120 Key = d, Value = 110 Key = e, Value = 115 Array after re-indexing Key = b, Value = 150 Key = c, Value = 100 Key = d, Value = 120 Key = e, Value = 110 Key = f, Value = 115

To trim all strings in an array in PHP, 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 Updated Array... Value = John Value = Jacob Value = Tom Value = TimExampleLet us now see another example − Live DemoOutputThis will produce the following output−Array with leading and trailing whitespaces... Value = Kevin Value = Katie Value = Angelina Value = Jack Updated Array... Kevin Katie Angelina Jack

To sort an array of dates in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Array (    [0] => 2019-08-10    [1] => 2019-09-08    [2] => 2019-10-10    [3] => 2019-11-11 )ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Array (    [0] => 2019-11-11    [1] => 2019-11-11    [2] => 2019-10-10    [3] => 2019-09-08    [4] => 2019-05-11    [5] => 2019-01-01 )

To check substring in a string, the code is as follows in PHP −Example Live DemoOutputThis will produce the following output−String = How I Met Your Mother Substring = Mother Substring found successfullyExampleLet us now see another example − Live DemoOutputThis will produce the following output−String = In the Heart of Sea Substring = Ocean Substring not found

To add days to $Date in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Displaying date... Date = 2019-11-11 Displaying updated date... 2019-12-01ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Displaying Date...2019/11/11 Displaying Updated Date... 2019/12/06

To convert string to boolean in PHP, the code is as follows. Use the filter_val() method−Example Live DemoOutputThis will produce the following output−Displaying Sunday as first day of a week... First day (next week) = Sunday - 15/12/2019 bool(false)ExampleLet us now see another example − Live DemoOutputThis will produce the following output−bool(false) bool(true) bool(false) bool(false)