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Imagick::encipherImage — Enciphers an image
$passphrase
) : boolConverts plain pixels to enciphered pixels. The image is not readable until it has been deciphered using Imagick::decipherImage() 此方法在Imagick基于ImageMagick 6.3.9以上版本编译时可用。
passphraseThe passphrase
成功时返回 TRUE。