PHP将base64图像字符串转换为MySQL的Blob

Question

I have the base64 string of an image in PHP, for example:

$imgStr =  'data:image/png;base64,E0LdjA==';

I have a MySQL table with 2 fields id(varchar) and img(blob) . i have a stored procedure that inserts these values and is exceuted from PHP.

i used base64_decode($imgStr) to convert the image to blob, the procedures executes but the value of blob in the Database is empty.

here is my PHP function for the execution:

function test($id,$img){
        if (connect()){
            global $conn;
            $query = $conn->prepare("CALL prctest(?,?,@rtn)");
            $blob = base64_decode($img); 
            $query->bind_param('sb',$id,$blob); 
            $query->execute();
            $result = $conn->query("SELECT @rtn as rtn");
            $row = $result->fetch_assoc();
            echo  $row['rtn'];
            $result->free();
            close();
        }
        else{
            echo "connection error!";
        }
    }

i cant figure out what wrong!

Answer 1

I have the base64 string of an image in PHP, for example:

$imgStr =  'data:image/png;base64,E0LdjA==';

I have a MySQL table with 2 fields id(varchar) and img(blob) . i have a stored procedure that inserts these values and is exceuted from PHP.

i used base64_decode($imgStr) to convert the image to blob, the procedures executes but the value of blob in the Database is empty.

here is my PHP function for the execution:

function test($id,$img){
        if (connect()){
            global $conn;
            $query = $conn->prepare("CALL prctest(?,?,@rtn)");
            $blob = base64_decode($img); 
            $query->bind_param('sb',$id,$blob); 
            $query->execute();
            $result = $conn->query("SELECT @rtn as rtn");
            $row = $result->fetch_assoc();
            echo  $row['rtn'];
            $result->free();
            close();
        }
        else{
            echo "connection error!";
        }
    }

i cant figure out what wrong!

Answer 2

I have the base64 string of an image in PHP, for example:

$imgStr =  'data:image/png;base64,E0LdjA==';

I have a MySQL table with 2 fields id(varchar) and img(blob) . i have a stored procedure that inserts these values and is exceuted from PHP.

i used base64_decode($imgStr) to convert the image to blob, the procedures executes but the value of blob in the Database is empty.

here is my PHP function for the execution:

function test($id,$img){
        if (connect()){
            global $conn;
            $query = $conn->prepare("CALL prctest(?,?,@rtn)");
            $blob = base64_decode($img); 
            $query->bind_param('sb',$id,$blob); 
            $query->execute();
            $result = $conn->query("SELECT @rtn as rtn");
            $row = $result->fetch_assoc();
            echo  $row['rtn'];
            $result->free();
            close();
        }
        else{
            echo "connection error!";
        }
    }

i cant figure out what wrong!

Answer 3

I have the base64 string of an image in PHP, for example:

$imgStr =  'data:image/png;base64,E0LdjA==';

I have a MySQL table with 2 fields id(varchar) and img(blob) . i have a stored procedure that inserts these values and is exceuted from PHP.

i used base64_decode($imgStr) to convert the image to blob, the procedures executes but the value of blob in the Database is empty.

here is my PHP function for the execution:

function test($id,$img){
        if (connect()){
            global $conn;
            $query = $conn->prepare("CALL prctest(?,?,@rtn)");
            $blob = base64_decode($img); 
            $query->bind_param('sb',$id,$blob); 
            $query->execute();
            $result = $conn->query("SELECT @rtn as rtn");
            $row = $result->fetch_assoc();
            echo  $row['rtn'];
            $result->free();
            close();
        }
        else{
            echo "connection error!";
        }
    }

i cant figure out what wrong!