Overwritte data in postgresql table php - php

Question

The data present in the postgresql table isn't update any more. I want to overwrite the data. When I just use insert into, new data is added but the old data remains. I tried to use update but then I get errors. I would like to update all records. I think it's probably something with the syntax. But I can't find the problem.
Code
$dbname = "dbtest";
$host = "localhost";
$username = "postgres";
$password = "pasword";
$dbh = new PDO("pgsql:dbname=$dbname; host=$host", $username, $password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$c = array("Human","Mouse","Rat","Hamster","SV40");
$b = array("Human HBO gene", "Mouse BB gene", "Human CCB gene", "SV40 TP gene", "Hamster TP53 gene");
$count=0;
foreach($c as $key => $d){
$e =$b[$key];
$name = $count++;
if (strpos($e, $d) !== FALSE) {
$match = $d;
$specie = $d;
$specie = str_replace("Human","Homo Sapiens",$specie);
$specie = str_replace("Mouse","Mus Musculus",$specie);
$specie = str_replace("Rat","Rattus norvegicus",$specie);
$Specie = str_replace("Hamster", "Mesocricetus Auratus",$specie);
$specie = str_replace("SV40","Simian virus 40",$specie);
}else{
$match = "0";
$specie = "0";
}
echo $match. " ". $specie. " ";
$var_id = $name;
$var_match = $match;
$var_full_name = $specie;
#$sql = "INSERT INTO species (id,match,full_name) VALUES ('".$var_id."','".$var_match ."','".$var_full_name."')";
$sql = "UPDATE species SET id = '".$var_id."', match = '".$var_match ."', full_name='".$var_full_name."'";
if ($dbh->query($sql)) {
echo "New Record Inserted Successfully!<br \>\n";
}else{
echo "Data not successfully Inserted.<br \>\n";
}
}
The error I get:
Fatal error: Uncaught PDOException: SQLSTATE[42601]: Syntax error: 7 ERROR: > syntax error at or near "Sapiens" LINE 1: ...species SET id = '0', match = Human, full_name=Homo Sapiens' ^ in /var/www/html/test/Insert.php:59 Stack trace: #0 /var/www/html/test/Insert.php(59): PDO->query('UPDATE species ...') #1 {main} thrown in /var/www/html/test/Insert.php on line 59

Answer 1

You should use a select query to determine if the value is new or old. If old update data, else insert data.
FUNCTION
function execute_query($query,$dbh){
if ($dbh->query($query)) {
return "New Record Inserted Successfully!<br \>\n";
}else{
return "Data not successfully Inserted.<br \>\n";
}
}
SELECT
$query = 'SELECT * FROM tbl '. 'WHERE "test1" = '.
"'".$var_test."'" . 'AND "test2" = '.
"'".$var_test2."'";
$stmt = $dbh->prepare($query);
$stmt->execute();
$result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
$outcome = $stmt->fetch();
UPDATE
if ($outcome !== false){
$sql = "UPDATE tbl SET test1 = '".$var_test1."', test2 = '".$var_test2."',
test3 = '".$var_test3."'
"WHERE id = '".$var_id."' ";
execute_query($sql,$dbh);
INSERT
}else{
$sql = "INSERT INTO genes
(id,test1,test2,test3)
VALUES ('".$var_id."','".$var_test1 ."','".$var_test2."','".$var_test3."')";
execute_query($sql,$dbh);
}

Answer 2

When I use the following syntax, the error is gone. This query needs to be used to update.
$sql = "UPDATE species SET match ='".$var_match ."', full_name='".$var_full_name."' WHERE id = '".$var_id."' ";