PHP - I Can't Figure Out The Syntax Error In The Code

The issue is there seems to be NO syntax error.

1. There is no relevant code before or after this line. 2. Yes, one would think a ! should be there as did I (I didn't write the code), however, even with the ! it still gives the same error.

if (function_exists('gzcompress')) die(FUNCTION_NOT_FOUND); is giving me a

syntax error, unexpected 'if', expecting 'function' or 'const'

I am updating this code from PHP5.3 to PHP7.4 and I can't figure out what the syntax problem is since PHP allows this. I am using Eclipse PHP to do the conversion.

I am getting Fatal error: Uncaught Error: Call to a member function real_query() on null  with this code:

public final function Retrieve($TABLE, $CRIT){
  $_query = "SELECT * FROM `{$TABLE}` WHERE ";
  foreach($CRIT as $_field => $info){
    $_query .= " `{$_field}` = `{$info}` &&";
  }
  if($this->LINK->real_query(rtrim($_query, ' &'))){
    return $this->LINK->store_result();
  } else{
    return json_encode(array("Error"=>$this->LINK->errno(), "Description"=>$this->LINK->error()));
  }
}

(LINK is my mysql_connect() result.) I have tried everything i can think of, ->query, going to mysqli_query, breaking it sown and using a $result variable, but nothing seems to work...

Can someone please give me some guidance on how to deal with the following warning

Warning: move_uploaded_file(../usernet/img/60ff59c9f0a830.45733158.jpg): Failed to open stream: Permission denied in /opt/lampp/htdocs/site/admin/add_post.php on line 23

Warning: move_uploaded_file(): Unable to move "/tmp/phpXNeGsj" to "../usernet/img/60ff59c9f0a830.45733158.jpg" in /opt/lampp/htdocs/site/admin/add_post.php on line 23

All directories and files in the path have full owner permissions and I've made myself the owner of them all (I'm on a linux system). I've also done the same with the /tmp folder. I can't even think of anything else to change and haven't found anything online that solves the issue.

in case it's needed, the php is as follows:

<?php
require("assets/initializations.php");

if(isset($_POST['add_post']) && !empty($_FILES['post_image'])) {
    $filename = $_FILES['post_image']['name'];
    $file_tmp_name = $_FILES['post_image']['tmp_name'];
    $filesize = $_FILES['post_image']['size'];

    $file_ext = explode('.', $filename);
    $file_act_ext = strtolower(end($file_ext));
    $allowed = array('jpeg', 'jpg', 'png', 'gif');

    if(!in_array($file_act_ext, $allowed)) {
        header("Location: add_post.php?message=file_type_not_allowed");
    } else {
        if($filesize > 10000000) {
            header("Location: add_post.php?message=file_too_large");

        } else {
            $file_new_name = uniqid('', true) . "." . $file_act_ext;
            $dir = "../usernet/img/";
            $target_file = $dir . basename($file_new_name);
            move_uploaded_file($file_tmp_name, $target_file);
            echo "<script>alert('Image uploaded successfully');</script>";
        }
    }
}

I do get the javascript alert that's it's been successfully uploaded, but the image doesn't make it into the specified directory and I get the warnings at the top. I'm also, probably obviously from the path, using XAMPP server for development. TIA

Hello everyone,
I am a total newbie in PHP and so do here. I am trying to build a table consisting foreign key and primary key and it is showing error like "Parse error: syntax error, unexpected 'cities' (T_STRING) in line number 29". I have marked up my lines according to sublime text 3 editor. I am trying to create a database. 

 

1 <?php
2 $servername = "localhost";
3 $username = "username";
4 $password = "password";
5 $dbname = "newDB";

7 // Create connection
8 $conn = new mysqli($servername, $username, $password, $dbname);

10 // Check connection
11 if ($conn->connect_error) {
12   die("Connection failed: " . $conn->connect_error);}

14 $firstname = $conn->real_escape_string($_REQUEST['firstname']);
15 $lastname = $conn->real_escape_string($_REQUEST['lastname']);
16 $address = $conn->real_escape_string($_REQUEST['address']);
17 $city = $conn->real_escape_string($_REQUEST['city']);
18 $country = $conn->real_escape_string($_REQUEST['country']);
19 $phone_number = $conn->real_escape_string($_REQUEST['phone_number']);
20 $email = $conn->real_escape_string($_REQUEST['email']);
 
22 // Attempt insert query execution
23 $sql1 = "INSERT INTO cities VALUES ('$city')";

25 $sql2 = "INSERT INTO countries VALUES ('$country')";

27 $sql3 = "INSERT INTO Contacts (firstname, lastname, address, city, country, phone, email) VALUES ('$firstname', '$lastname', '$address', $city, $country, '$phone_number','$email')";

29 SELECT * FROM cities;
SELECT * FROM countries;
SELECT * FROM Contacts;

if($conn->query($sql1) === true){
    echo "City added successfully.";
} else{
    echo "ERROR: Could not able to execute " . $conn->error;
}

if($conn->query($sql2) === true){
    echo "Çountry added successfully.";
} else{
    echo "ERROR: Could not able to execute " . $conn->error;
}

if($conn->query($sql3) === true){
    echo "Çontact added successfully.";
} else{
    echo "ERROR: Could not able to execute " . $conn->error;
}
 
// Close connection
$conn->close();
?>