javascript post base64 encrypt and decrypt image

I am working with javascript image post in base64.
When the image is posted it showsinvalid image all the time. How to solve this?

I can't understand what's the problem.

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

My php code in "itemimages.php" file

$imagedata = $_POST['image_data'];



    $imagepath = "images/aa.png";



    $imagedata = preg_replace( '/data:image/.*;base64,/', '', $imagedata );

     if(file_put_contents($imagepath,base64_decode($imagedata)))

     {

        echo "$imagedata"; 

     }

It contains an encrypted string but the string is not showing an image

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

You should probably be using a content type of form data and not form-url encoded.

– basic
Jan 3 at 16:57

I already try with this ` xxhttp.setRequestHeader("Content-type","multipart/form-data");` but it take blank data.

– Tamal Dev
Jan 3 at 17:19

Note that you add data:image/png;base64,// to the data before sending, but only remove data:image/png;base64, in your preg_replace() call. This could be resulting in an invalid encoding. Try changing the regular expression to /data:image/.*;base64,/// instead and see if that helps.

– B. Fleming
Jan 3 at 17:21

add a comment |

I am working with javascript image post in base64.
When the image is posted it showsinvalid image all the time. How to solve this?

I can't understand what's the problem.

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

My php code in "itemimages.php" file

$imagedata = $_POST['image_data'];



    $imagepath = "images/aa.png";



    $imagedata = preg_replace( '/data:image/.*;base64,/', '', $imagedata );

     if(file_put_contents($imagepath,base64_decode($imagedata)))

     {

        echo "$imagedata"; 

     }

It contains an encrypted string but the string is not showing an image

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

You should probably be using a content type of form data and not form-url encoded.

– basic
Jan 3 at 16:57

I already try with this ` xxhttp.setRequestHeader("Content-type","multipart/form-data");` but it take blank data.

– Tamal Dev
Jan 3 at 17:19

Note that you add data:image/png;base64,// to the data before sending, but only remove data:image/png;base64, in your preg_replace() call. This could be resulting in an invalid encoding. Try changing the regular expression to /data:image/.*;base64,/// instead and see if that helps.

– B. Fleming
Jan 3 at 17:21

add a comment |

I am working with javascript image post in base64.
When the image is posted it showsinvalid image all the time. How to solve this?

I can't understand what's the problem.

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

My php code in "itemimages.php" file

$imagedata = $_POST['image_data'];



    $imagepath = "images/aa.png";



    $imagedata = preg_replace( '/data:image/.*;base64,/', '', $imagedata );

     if(file_put_contents($imagepath,base64_decode($imagedata)))

     {

        echo "$imagedata"; 

     }

It contains an encrypted string but the string is not showing an image

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

I am working with javascript image post in base64.
When the image is posted it showsinvalid image all the time. How to solve this?

I can't understand what's the problem.

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

My php code in "itemimages.php" file

$imagedata = $_POST['image_data'];



    $imagepath = "images/aa.png";



    $imagedata = preg_replace( '/data:image/.*;base64,/', '', $imagedata );

     if(file_put_contents($imagepath,base64_decode($imagedata)))

     {

        echo "$imagedata"; 

     }

It contains an encrypted string but the string is not showing an image

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {



			var xxhttp = new XMLHttpRequest();

            xxhttp.onreadystatechange = function() {

            if (this.readyState == 4 && this.status == 200) {

               

							document.getElementById('output').src = "data:image/png;base64,//" + this.responseText + "";





                        

                                                        

                            }

                     };

                      xxhttp.open("POST", "itemimages.php", true);

                      xxhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

                      xxhttp.send('image_data=' + reader.result);

        

  }

  reader.readAsDataURL(file);

}

<input type="file" accept="image/png" onchange="encodeImageFileAsURL(this)" />

<img id="output" src="" alt="" />

javascript php html base64

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

edited Jan 3 at 17:24

Stundji

497314

edited Jan 3 at 17:24

Stundji

497314

edited Jan 3 at 17:24

Stundji

497314

asked Jan 3 at 16:54

Tamal Dev

105

asked Jan 3 at 16:54

Tamal Dev

105

asked Jan 3 at 16:54

Tamal Dev

105

You should probably be using a content type of form data and not form-url encoded.

– basic
Jan 3 at 16:57

I already try with this ` xxhttp.setRequestHeader("Content-type","multipart/form-data");` but it take blank data.

– Tamal Dev
Jan 3 at 17:19

Note that you add data:image/png;base64,// to the data before sending, but only remove data:image/png;base64, in your preg_replace() call. This could be resulting in an invalid encoding. Try changing the regular expression to /data:image/.*;base64,/// instead and see if that helps.

– B. Fleming
Jan 3 at 17:21

add a comment |

You should probably be using a content type of form data and not form-url encoded.

– basic
Jan 3 at 16:57

I already try with this ` xxhttp.setRequestHeader("Content-type","multipart/form-data");` but it take blank data.

– Tamal Dev
Jan 3 at 17:19

Note that you add data:image/png;base64,// to the data before sending, but only remove data:image/png;base64, in your preg_replace() call. This could be resulting in an invalid encoding. Try changing the regular expression to /data:image/.*;base64,/// instead and see if that helps.

– B. Fleming
Jan 3 at 17:21

You should probably be using a content type of form data and not form-url encoded.

– basic
Jan 3 at 16:57

I already try with this ` xxhttp.setRequestHeader("Content-type","multipart/form-data");` but it take blank data.

– Tamal Dev
Jan 3 at 17:19

Note that you add data:image/png;base64,// to the data before sending, but only remove data:image/png;base64, in your preg_replace() call. This could be resulting in an invalid encoding. Try changing the regular expression to /data:image/.*;base64,/// instead and see if that helps.

– B. Fleming
Jan 3 at 17:21

add a comment |

1 Answer
1

active

oldest

votes

If your data arrives correctly to php ... you should try this

$imagedata = $_POST['image_data'];



$image_parts = explode(";base64,", $imagedata);

$image_type_aux = explode("image/", $image_parts[0]);

$image_base64 = base64_decode($image_parts[1]);



$imagepath = "images/aa." . $image_type_aux[1];



file_put_contents($imagepath , $image_base64);

--- javascript ---

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {

    console.log(reader.result)

  }

  reader.readAsDataURL(file);

}

-- html --

<input type="file" onchange="encodeImageFileAsURL(this)">

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

If your data arrives correctly to php ... you should try this

$imagedata = $_POST['image_data'];



$image_parts = explode(";base64,", $imagedata);

$image_type_aux = explode("image/", $image_parts[0]);

$image_base64 = base64_decode($image_parts[1]);



$imagepath = "images/aa." . $image_type_aux[1];



file_put_contents($imagepath , $image_base64);

--- javascript ---

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {

    console.log(reader.result)

  }

  reader.readAsDataURL(file);

}

-- html --

<input type="file" onchange="encodeImageFileAsURL(this)">

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

add a comment |

If your data arrives correctly to php ... you should try this

$imagedata = $_POST['image_data'];



$image_parts = explode(";base64,", $imagedata);

$image_type_aux = explode("image/", $image_parts[0]);

$image_base64 = base64_decode($image_parts[1]);



$imagepath = "images/aa." . $image_type_aux[1];



file_put_contents($imagepath , $image_base64);

--- javascript ---

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {

    console.log(reader.result)

  }

  reader.readAsDataURL(file);

}

-- html --

<input type="file" onchange="encodeImageFileAsURL(this)">

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

add a comment |

If your data arrives correctly to php ... you should try this

$imagedata = $_POST['image_data'];



$image_parts = explode(";base64,", $imagedata);

$image_type_aux = explode("image/", $image_parts[0]);

$image_base64 = base64_decode($image_parts[1]);



$imagepath = "images/aa." . $image_type_aux[1];



file_put_contents($imagepath , $image_base64);

--- javascript ---

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {

    console.log(reader.result)

  }

  reader.readAsDataURL(file);

}

-- html --

<input type="file" onchange="encodeImageFileAsURL(this)">

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

If your data arrives correctly to php ... you should try this

$imagedata = $_POST['image_data'];



$image_parts = explode(";base64,", $imagedata);

$image_type_aux = explode("image/", $image_parts[0]);

$image_base64 = base64_decode($image_parts[1]);



$imagepath = "images/aa." . $image_type_aux[1];



file_put_contents($imagepath , $image_base64);

--- javascript ---

function encodeImageFileAsURL(element) {

  var file = element.files[0];

  var reader = new FileReader();

  reader.onloadend = function() {

    console.log(reader.result)

  }

  reader.readAsDataURL(file);

}

-- html --

<input type="file" onchange="encodeImageFileAsURL(this)">

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

edited Jan 3 at 17:37

answered Jan 3 at 17:22

Diego Salguero

12014

answered Jan 3 at 17:22

Diego Salguero

12014

answered Jan 3 at 17:22

Diego Salguero

12014

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

add a comment |

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

sorry! Bro it's doesn't work too.

– Tamal Dev
Jan 3 at 17:31

use the other function to encode image

– Diego Salguero
Jan 3 at 17:38

javascript function are same. Your function just output on the console.

– Tamal Dev
Jan 4 at 2:12

add a comment |

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