imagecrop

(PHP 5 >= 5.5.0, PHP 7)

imagecropCrop an image to the given rectangle

说明

resource imagecrop ( resource $image , array $rect )

Crops an image to the given rectangular area and returns the resulting image. The given image is not modified.

参数

image

由图象创建函数(例如imagecreatetruecolor())返回的图象资源。

rect

The cropping rectangle as array with keys x, y, width and height.

返回值

Return cropped image resource on success 或者在失败时返回 FALSE.

范例

Example #1 imagecrop() example

This example shows how to crop an image to a square area.

<?php
$im 
imagecreatefrompng('example.png');
$size min(imagesx($im), imagesy($im));
$im2 imagecrop($im, ['x' => 0'y' => 0'width' => $size'height' => $size]);
if (
$im2 !== FALSE) {
    
imagepng($im2'example-cropped.png');
}
?>

参见

  • imagecropauto() - Crop an image automatically using one of the available modes
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User Contributed Notes 3 notes

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7
robert at woodst dot com
1 year ago
It appears that imagecrop() will output a black line along the bottom the resulting image until version 5.6.12. Your only choices are to upgrade PHP or use imagecopyresampled().

http://php.net/ChangeLog-5.php#5.6.12 (bug #67447)
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0
shaun at slickdesign dot com dot au
14 days ago
Use imagecopyresampled to crop your image instead, and it should work correctly in PHP 5.5+ without any black lines.

<?php
// Desired function call.
$cropped = imagecrop( $image, array( 'x' => $x, 'y' => $y, 'width' => $width, 'height' => $height ) );

// Equivalent function which works in both PHP pre 5.6.12 and 5.6.12+.
$cropped = imagecreatetruecolor( $width, $height );
imagecopyresampled( $cropped, $image, 0, 0, $x, $y, $width, $height, $width, $height );
?>
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0
vanadragos at yahoo dot com
1 month ago
To get the center crop of a image in php:

           
$new = imagecreatefromjpeg($uploadedfile);

    $crop_width = imagesx($new);
    $crop_height = imagesy($new);
               
            $size = min($crop_width, $crop_height);
           
           
            if($crop_width >= $crop_height) {
            $newx= ($crop_width-$crop_height)/2;
           
            $im2 = imagecrop($new, ['x' => $newx, 'y' => 0, 'width' => $size, 'height' => $size]);
            }
            else {
                $newy= ($crop_height-$crop_width)/2;
           
                $im2 = imagecrop($new, ['x' => 0, 'y' => $newy, 'width' => $size, 'height' => $size]);
                }
           
               
    imagejpeg($im2,$filename,90);
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