Availability in versions: PHP 5.5.0
Set the interpolation method
Parameters
| Parameter |
Data type |
Default value |
Note |
$image |
resource |
not |
An image resource, returned by one of the image creation functions, such as {@link https://www.php.net/manual/en/function.imagecreatetruecolor.php imagecreatetruecolor()}. |
$method |
int |
IMG_BILINEAR_FIXED |
The interpolation method, which can be one of the following: - IMG_BELL: Bell filter.
- IMG_BESSEL: Bessel filter.
- IMG_BICUBIC: Bicubic interpolation.
- IMG_BICUBIC_FIXED: Fixed point implementation of the bicubic interpolation.
- IMG_BILINEAR_FIXED: Fixed point implementation of the bilinear interpolation (default (also on image creation)).
- IMG_BLACKMAN: Blackman window function.
- IMG_BOX: Box blur filter.
- IMG_BSPLINE: Spline interpolation.
- IMG_CATMULLROM: Cubbic Hermite spline interpolation.
- IMG_GAUSSIAN: Gaussian function.
- IMG_GENERALIZED_CUBIC: Generalized cubic spline fractal interpolation.
- IMG_HERMITE: Hermite interpolation.
- IMG_HAMMING: Hamming filter.
- IMG_HANNING: Hanning filter.
- IMG_MITCHELL: Mitchell filter.
- IMG_POWER: Power interpolation.
- IMG_QUADRATIC: Inverse quadratic interpolation.
- IMG_SINC: Sinc function.
- IMG_NEAREST_NEIGHBOUR: Nearest neighbor interpolation.
- IMG_WEIGHTED4: Weighting filter.
- IMG_TRIANGLE: Triangle interpolation.
|
Return values
bool
Returns true on success, otherwise false on failure.
Additional resources