wp-includes/class-wp-image-editor-gd.php:362Crops Image.
$src_xint$src_yint$src_wint$src_hint$dst_wintoptionalnull$dst_hintoptionalnull$src_absbooloptionalfalsetrue|WP_Error public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false ) { /* * If destination width/height isn't specified, * use same as width/height from source. */ if ( ! $dst_w ) { $dst_w = $src_w; } if ( ! $dst_h ) { $dst_h = $src_h; } foreach ( array( $src_w, $src_h, $dst_w, $dst_h ) as $value ) { if ( ! is_numeric( $value ) || (int) $value <= 0 ) { return new WP_Error( 'image_crop_error', __( 'Image crop failed.' ), $this->file ); } } $dst = wp_imagecreatetruecolor( (int) $dst_w, (int) $dst_h ); if ( $src_abs ) { $src_w -= $src_x; $src_h -= $src_y; } if ( function_exists( 'imageantialias' ) ) { imageantialias( $dst, true ); } imagecopyresampled( $dst, $this->image, 0, 0, (int) $src_x, (int) $src_y, (int) $dst_w, (int) $dst_h, (int) $src_w, (int) $src_h ); if ( is_gd_image( $dst ) ) { if ( PHP_VERSION_ID < 80000 ) { // imagedestroy() has no effect as of PHP 8.0. imagedestroy( $this->image ); } $this->image = $dst; $this->update_size(); return true; } return new WP_Error( 'image_crop_error', __( 'Image crop failed.' ), $this->file ); }Introduced in 3.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-image-editor-gd.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.