Error imagedestroy
Publicado por Ruben (3 intervenciones) el 10/12/2022 10:42:11
Hola amigos,
Estuve buscando una funcion para redimensionar y cortar automaticamente mis imagenes. Encontre el siguiente codigo, parece funcionar bien pero me salta un error que me esta volviendo loco. No logro resolver
Error
Function
Muchas gracias a todos
un saludo
Estuve buscando una funcion para redimensionar y cortar automaticamente mis imagenes. Encontre el siguiente codigo, parece funcionar bien pero me salta un error que me esta volviendo loco. No logro resolver
Error
1
Warning: imagedestroy(): supplied resource is not a valid Image resource in
Function
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<?php
function resize_image($method,$image_loc,$new_loc,$width,$height) {
if (!array_key_exists('errors', $GLOBALS) || !is_array($GLOBALS['errors'])) { $GLOBALS['errors'] = array(); }
if (!in_array($method, array('force','max','crop'))) { $GLOBALS['errors'][] = 'Invalid method selected.'; }
if (!$image_loc) { $GLOBALS['errors'][] = 'No source image location specified.'; }
else {if ((substr(strtolower($image_loc),0,7) == 'http://') || (substr(strtolower($image_loc),0,7) == 'https://')) { } // don't check to see if file exists since it's not local
elseif (!file_exists($image_loc)) { $GLOBALS['errors'][] = 'Image source file does not exist.'; }
$extension = strtolower(substr($image_loc,strrpos($image_loc,'.')));
if (!in_array($extension,array('.jpg','.jpeg','.png','.gif','.bmp'))) { $GLOBALS['errors'][] = 'Invalid source file extension!'; }
}if (!$new_loc) { $GLOBALS['errors'][] = 'No destination image location specified.'; }
else {$new_extension = strtolower(substr($new_loc,strrpos($new_loc,'.')));
if (!in_array($new_extension,array('.jpg','.jpeg','.png','.gif','.bmp'))) { $GLOBALS['errors'][] = 'Invalid destination file extension!'; }
}$width = abs(intval($width));
if (!$width) { $GLOBALS['errors'][] = 'No width specified!'; }
$height = abs(intval($height));
if (!$height) { $GLOBALS['errors'][] = 'No height specified!'; }
if (count($GLOBALS['errors']) > 0) { echo_errors(); return false; }
if (in_array($extension,array('.jpg','.jpeg'))) { $image = @imagecreatefromjpeg($image_loc); }
elseif ($extension == '.png') { $image = @imagecreatefrompng($image_loc); }
elseif ($extension == '.gif') { $image = @imagecreatefromgif($image_loc); }
elseif ($extension == '.bmp') { $image = @imagecreatefromwbmp($image_loc); }
if (!$image) { $GLOBALS['errors'][] = 'Image could not be generated!'; }
else {$current_width = imagesx($image);
$current_height = imagesy($image);
if ((!$current_width) || (!$current_height)) { $GLOBALS['errors'][] = 'Generated image has invalid dimensions!'; }
}if (count($GLOBALS['errors']) > 0) { @imagedestroy($image); echo_errors(); return false; }
if ($method == 'force') { $new_image = resize_image_force($image,$width,$height); }
elseif ($method == 'max') { $new_image = resize_image_max($image,$width,$height); }
elseif ($method == 'crop') { $new_image = resize_image_crop($image,$width,$height); }
if ((!$new_image) && (count($GLOBALS['errors'] == 0))) { $GLOBALS['errors'][] = 'New image could not be generated!'; }
if (count($GLOBALS['errors']) > 0) { @imagedestroy($image); echo_errors(); return false; }
$save_error = false;if (in_array($extension,array('.jpg','.jpeg'))) { imagejpeg($new_image,$new_loc) or ($save_error = true); }
elseif ($extension == '.png') { imagepng($new_image,$new_loc) or ($save_error = true); }
elseif ($extension == '.gif') { imagegif($new_image,$new_loc) or ($save_error = true); }
elseif ($extension == '.bmp') { imagewbmp($new_image,$new_loc) or ($save_error = true); }
if ($save_error) { $GLOBALS['errors'][] = 'New image could not be saved!'; }
if (count($GLOBALS['errors']) > 0) { @imagedestroy($image); @imagedestroy($new_image); echo_errors(); return false; }
imagedestroy($image);
imagedestroy($new_image);
return true;
}function echo_errors() {
if ((!array_key_exists('errors',$GLOBALS)) || (!is_array($GLOBALS['errors']))) { $GLOBALS['errors'] = array(); }
foreach ($GLOBALS['errors'] as $error) { echo '<p style="color:red;font-weight:bold;">Error: '.$error.'</p>'; }
}function resize_image_crop($image, $width, $height) {
if (!array_key_exists('errors', $GLOBALS) || !is_array($GLOBALS['errors'])) { $GLOBALS['errors'] = array(); }
$w = @imagesx($image); // current width
$h = @imagesy($image); // current height
if ((!$w) || (!$h)) { $GLOBALS['errors'][] = 'Image could not be resized because it was not a valid image.'; return false; }
if (($w == round($width)) && ($h == round($height))) { return $image; } // no resizing needed
// try max width first...$ratio = $width / $w;
$new_w = $width;$new_h = $h * $ratio;
// if that created an image smaller than what we wanted, try the other wayif ($new_h < $height) {
$ratio = $height / $h;
$new_h = $height;$new_w = $w * $ratio;
} // resize the image$new_w = round($new_w);
$new_h = round($new_h);
$image2 = imagecreatetruecolor($new_w, $new_h);
imagecopyresampled($image2, $image, 0, 0, 0, 0, $new_w, $new_h, $w, $h);
// check to see if cropping needs to happenif (($new_h != $height) || ($new_w != $width)) {
$image3 = imagecreatetruecolor($width, $height);
if ($new_h > $height) { //crop vertically
$extra = $new_h - $height;
$x = 0; // source x
$y = round($extra / 2); // source y
imagecopyresampled($image3, $image2, 0, 0, $x, $y, $width, $height, $width, $height);
} else {$extra = $new_w - $width;
$x = round($extra / 2); // source x
$y = 0; // source y
imagecopyresampled($image3, $image2, 0, 0, $x, $y, $width, $height, $width, $height);
}imagedestroy($image2);
return $image3;
} else {return $image2;
}}?>
Muchas gracias a todos
un saludo
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