What is substr() in PHP? and how it is used?

1.	What is substr() in PHP? and how it is used?
Answer» It is used to extract a part of the string. It allows THREE parameters or arguments out of which two are mandatory, and one is optional echo substr("Hello world",6); It will return first six characters from a given string. 92. What the use of var_dump()? It is used to DUMP information about one or more VARIABLES. It displays structured data such as the type and value of the given variable. Example: $var_name1=12; int(12);

Answer»

It is used to extract a part of the string. It allows THREE parameters or arguments out of which two are mandatory, and one is optional

echo substr("Hello world",6);

It will return first six characters from a given string.

92. What the use of var_dump()?

It is used to DUMP information about one or more VARIABLES. It displays structured data such as the type and value of the given variable.

Example:

$var_name1=12; int(12);

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