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

To get the numeric index of an associative array, the code is as follows−Example Live DemoOutputThis will produce the following output−Array key and value... key: a, value: 5 key: b, value: 20 key: c, value: 35 key: d, value: 55ExampleLet us now see another example− Live DemoOutputThis will produce the following output−Array key and value... key: p, value: 150 key: q, value: 100 key: r, value: 120 key: s, value: 110 Updated Array key and value... key: p, value: 150 key: q, value: 100 key: r, value: 120 key: s, value: 25

To get the file name from a path, the code is as follows−Example Live DemoOutputThis will produce the following output−main.phpExampleLet us now see another example − Live DemoOutputThis will produce the following output−main

To get the current function name in PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Base class function! Base class function declared final!string(7) "display" Derived class function! Base class function declared final!string(7) "display"ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Base class function!string(10) "Base::demo" Base class function declared final!string(7) "display" Derived class function! Base class function declared final!string(7) "display"

To delete an array element based on a key 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 = Tim Updated Array... Value = John Value = Tom Value = TimExampleLet us now see another example − Live DemoOutputThis will produce the following output. Now, an error would be visible since we deleted the element and trying to ... Read More

Function Overloading in PHPFunction overloading is a feature that permits making creating several methods with a similar name that works differently from one another in the type of the input parameters it accepts as arguments.ExampleLet us now see an example to implement function overloading− Live DemoOutputThis will produce the following output−9.42648Function Overriding in PHPIn function overriding, the parent and child classes have the same function name with and number of argumentsExampleLet us now see an example to implement function overriding− Live DemoOutputThis will produce the following output−Base class function! Base class function declared final! Derived class function! Base class function declared final!Read More

To generate random string using PHP, the code is as follows−Example Live DemoOutputThis will produce the following output−Displaying random string... 1c856ExampleLet us now see another example − Live DemoOutputThis will produce the following output−Displaying random string... a3541 Displaying another random string... 335b83d9e9