The php var_dump function determines the type and length of a variable and outputs the value of the variable. If the variable has a value, it inputs the value of the variable and returns the data type. Take a look at var_dump syntax:

var_dump (var,var,bar);

Let’s take a look at my first example.

<?php
　　$ta =1;
　　$tb ='t';
　　echo var_dump($ta,$tb);
?>

The output is

int(1) string(1) "t"

The first number is int(1). Simple, but one thing to note, with var_dump, the variable must exist. If the variable exists but has an empty value, it will return false.

PHP: What is the var_dump() function for? Such as var_dump ($get); What does that mean? ========================================== This function displays structural information about one or more expressions, including the type and value of the expression.