PHP在PDF指定位置添加数字签名/图片
基本业务需求：按指定范本填充生成word文档，word转pdf后，在指定字符位置添加数字签名。
难点：获取pdf需要插入数字签名的坐标
使用到的第三方依赖：phpoffice/phpwordtecnickcom/tcpdfsetasign/fpdismalot/pdfparser
标签 PHP 下的文章
libpng warning: iccp: known incorrect sRGB profile
libpng警告 iCCP: known incorrect sRGB profile 通常出现在处理PNG图像时，这个警告表明在PNG文件中存在一个已知的不正确的sRGB配置文件（iCCP）。
原因分析
图像编辑工具问题：一些图像编辑工具可能会错误地添加或修改sRGB配置文件，导致libpng无法正确识别。
PNG规格要求：根据PNG规格，只有灰度图像可以有颜色类型为0或4的配置文件，而RGB图像只能有颜色类型为2、3或6的配置文件。如果不符合这些规则，就会出现警告。
特定场景下的应用：例如，在使用pygame开发游戏时，调用PNG格式图片会触发此警告。
关于秒杀系统的几点记录
NanoID - 轻量、安全的 Unique ID 生成器
NanoID
一个小巧、安全、URL友好、唯一的 JavaScript 字符串 ID 生成器。
- 小巧：130 bytes (已压缩和 gzipped)， 没有依赖，Size Limit 控制大小；
- 快速：它比 UUID 快 60%；
- 安全：它使用加密的强随机 API，可在集群中使用；
- 紧凑：它使用比 UUID（A-Za-z0-9_-）更大的字母表，因此，ID 大小从 36 个符号减少到 21 个符号；
- 易用：Nano ID 已被移植到 20种编程语言。
php版：https://github.com/hidehalo/nanoid-php
wampserver升级phpMyAdmin版本
php8与phpMyAdmin5.0存在兼容性问题，需升级到最新版。
1.下载最新版phpMyAdmin：https://www.phpmyadmin.net/ 并移动到wampserver安装目录下的apps目录；
2.修改alias\phpmyadmin.conf文件中的路径为新版路径；
3.复制或参考原phpMyAdmin目录下的config.inc.php到新版本目录；
4.修改根目录下wampmanager.conf文件中对应的版本号；（无效）
5.重启wamp
php国密sm4加解密
国密算法sm4对应的php加解密代码
<?php
Class SM4Util
{
const SM4_CK = [
0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
];
const SM4_Sbox = [
0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,
0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,
0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,
0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,
0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,
0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,
0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,
0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,
0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,
0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,
0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,
0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,
0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,
0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,
0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,
0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
];
/**
* 系统参数
*/
const SM4_FK = [0xA3B1BAC6, 0x56AA3350, 0x677D9197, 0xB27022DC];
private $key = [];//16个 HEXHEX格式的数组 16字节 128bits 为了操作方便,直接存成十进制
private $skey = [];//记录每轮加密的秘钥 记录成十进制
private $block_size = 32;
/**
* 字符串转16进制
* @param $str
* @return string
*/
public function strToHex($string){
$hex="";
for($i=0;$i<strlen($string);$i++)
$hex.=dechex(ord($string[$i]));
$hex=strtoupper($hex);
if(strlen($hex)>32){
return substr($hex,0,32);
}else{
return $hex;
}
}
/**设置加密秘钥
*
* @param $key 32个十六进制的字符
*
* @return $this
* @throws Exception
*/
public function setKey($key)
{
$key = $this->strToHex($key);
$this->key = $this->preProcess($key);
$this->setSkey();
return $this;
}
/**
* 计算每轮加密需要的秘钥
*/
private function setSkey()
{
$skey = [];
for ($i = 0; $i < 4; $i++) {
$skey[] = self::SM4_FK[$i] ^ ($this->key[4 * $i] << 24 | $this->key[4 * $i + 1] << 16 | $this->key[4 * $i + 2] << 8 | $this->key[4 * $i + 3]);
}
for ($k = 0; $k < 32; $k++) {
$tmp = $skey[$k + 1] ^ $skey[$k + 2] ^ $skey[$k + 3] ^ self::SM4_CK[$k];
//非线性化操作
$buf = (self::SM4_Sbox[($tmp >> 24) & 0xff]) << 24 |
(self::SM4_Sbox[($tmp >> 16) & 0xff]) << 16 |
(self::SM4_Sbox[($tmp >> 8) & 0xff]) << 8 |
(self::SM4_Sbox[$tmp & 0xff]);
//线性化操作
$skey[] = $skey[$k] ^ ($buf ^ $this->sm4Rotl32($buf, 13) ^ $this->sm4Rotl32($buf, 23));
$this->skey[] = $skey[$k + 4];
}
}
/**32比特的buffer中循环左移n位
*
* @param $buf int 可以传递进10进制 也可以是0b开头的二进制
* @param $n int 向左偏移n位
*
* @return int
* reference http://blog.csdn.net/w845695652/article/details/6522285
*/
private function sm4Rotl32($buf, $n)
{
return (($buf << $n) & 0xffffffff) | ($buf >> (32 - $n));
}
/**
* 对字符串加密
*
* @param $plainText
*
* @return string
* @throws Exception
*/
public function encryptData($plainText)
{
$bytes = bin2hex($plainText);
$need_pad_length = $this->block_size - strlen($bytes) % $this->block_size;
$pad_bytes = str_pad(
$bytes,
strlen($bytes) + $need_pad_length,
sprintf("%02x", $need_pad_length / 2),
STR_PAD_RIGHT
);
$chunks = str_split($pad_bytes, $this->block_size);
return strtolower(implode('', array_map(function ($chunk) {
return $this->encrypt($chunk);
}, $chunks)));
}
/**SM4加密单个片段(128bit)
*
* @param $text string 32个十六进制字符串
*
* @return string
* @throws Exception
*/
public function encrypt($text)
{
$x = $re = [];
$t = $this->preProcess($text);
for ($i = 0; $i < 4; $i++) {
$x[] = $t[$i * 4] << 24 |
$t[$i * 4 + 1] << 16 |
$t[$i * 4 + 2] << 8 |
$t[$i * 4 + 3];
}
for ($k = 0; $k < 32; $k++) {
$tmp = $x[$k + 1] ^ $x[$k + 2] ^ $x[$k + 3] ^ $this->skey[$k];
$buf = self::SM4_Sbox[($tmp >> 24) & 0xff] << 24 |
self::SM4_Sbox[($tmp >> 16) & 0xff] << 16 |
self::SM4_Sbox[($tmp >> 8) & 0xff] << 8 |
self::SM4_Sbox[$tmp & 0xff];
$x[$k + 4] = $x[$k] ^ $buf
^ $this->sm4Rotl32($buf, 2)
^ $this->sm4Rotl32($buf, 10)
^ $this->sm4Rotl32($buf, 18)
^ $this->sm4Rotl32($buf, 24);
}
for ($i = 0; $i < 4; $i++) {
$re[] = ($x[35 - $i] >> 24) & 0xff;
$re[] = ($x[35 - $i] >> 16) & 0xff;
$re[] = ($x[35 - $i] >> 8) & 0xff;
$re[] = $x[35 - $i] & 0xff;
}
return $this->wrapResult($re);
}
/**预处理16字节长度的16进制字符串 返回10进制的数组 数组大小为16
*
* @param $text
*
* @return array
* @throws Exception
*/
private function preProcess($text)
{
preg_match('/[0-9a-f]{32}/', strtolower($text), $re);
if (empty($re)) {
throw new Exception('error input format!');
}
$key = $re[0];
for ($i = 0; $i < 16; $i++) {
$result[] = hexdec($key[2 * $i] . $key[2 * $i + 1]);
}
return $result;
}
/**将十进制结果包装成16进制字符串输出
*
* @param $result
*
* @return string
*/
private function wrapResult($result)
{
$hex_str = '';
foreach ($result as $v) {
$tmp = dechex($v);
$len = strlen($tmp);
if ($len == 1)//不足两位十六进制的数 在前面补一个0,保证输出也是32个16进制字符
{
$hex_str .= '0';
}
$hex_str .= $tmp;
}
return strtoupper($hex_str);
}
/**SM4解密单个片段(128bits)
*
* @param $text string 32个16进制字符串
*
* @return string
* @throws Exception
*/
public function decrypt($text)
{
$x = $re = [];
$t = $this->preProcess($text);
for ($i = 0; $i < 4; $i++) {
$x[] = $t[4 * $i] << 24 |
$t[4 * $i + 1] << 16 |
$t[4 * $i + 2] << 8 |
$t[4 * $i + 3];
}
for ($k = 0; $k < 32; $k++) {
$tmp = $x[$k + 1] ^ $x[$k + 2] ^ $x[$k + 3] ^ $this->skey[31 - $k];
$buf = (self::SM4_Sbox[($tmp >> 24) & 0xff]) << 24 |
(self::SM4_Sbox[($tmp >> 16) & 0xff]) << 16 |
(self::SM4_Sbox[($tmp >> 8) & 0xff]) << 8 |
(self::SM4_Sbox[$tmp & 0xff]);
$x[$k + 4] = $x[$k] ^ $buf
^ $this->sm4Rotl32($buf, 2)
^ $this->sm4Rotl32($buf, 10)
^ $this->sm4Rotl32($buf, 18)
^ $this->sm4Rotl32($buf, 24);
}
for ($i = 0; $i < 4; $i++) {
$re[] = ($x[35 - $i] >> 24) & 0xff;
$re[] = ($x[35 - $i] >> 16) & 0xff;
$re[] = ($x[35 - $i] >> 8) & 0xff;
$re[] = $x[35 - $i] & 0xff;
}
return $this->wrapResult($re);
}
public function decryptData($cipherText)
{
$chunks = str_split($cipherText, $this->block_size);
$decrypt_text_data = implode('', array_map(function ($chunk) {
return $this->decrypt($chunk);
}, $chunks));
$pad_length = hexdec(substr($decrypt_text_data, -2));
return strtolower(hex2bin(preg_replace(
sprintf("/%s$/", str_repeat(sprintf("%02x", $pad_length), $pad_length)),
'',
$decrypt_text_data
)));
}
}
$data=[
"DOC_ID"=>"",'STATE'=>"1"
];
$sm4 = new SM4Util();
$original_plain_text_data = json_encode($data,true);
$key = 'abcdefghij123456';
$origin_encrypted_text = '58fb892aef37be96fc032d0613d4aaea5cb416baa6aac04f304d02604bb4701c';
$encrypted_text_data = $sm4->setKey($key)->encryptData($original_plain_text_data);
echo '<br>';
echo"自己加密：".$encrypted_text_data;
echo '<br>长度：'.strlen($encrypted_text_data);
echo '<br>';
echo"自己解密：". $sm4->setKey($key)->decryptData($encrypted_text_data);
echo '<hr>';
echo"原文：".$origin_encrypted_text;
echo '<br>长度：'.strlen($origin_encrypted_text);
//$encrypted_text_2_plain_text = $sm4->setKey($key)->decryptData($encrypted_text_data);
$original_decrypted_text = $sm4->setKey($key)->decryptData($origin_encrypted_text);
echo '<br>';
echo "原文解密：".$original_decrypted_text ;
echo '<br>';
另一种方法（实际使用过程中未解密成功，暂未深究）
<?php
class SM4 {
const SM4_CK = [
0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279
];
const SM4_SBOX = [
0xd6,0x90,0xe9,0xfe,0xcc,0xe1,0x3d,0xb7,0x16,0xb6,0x14,0xc2,0x28,0xfb,0x2c,0x05,
0x2b,0x67,0x9a,0x76,0x2a,0xbe,0x04,0xc3,0xaa,0x44,0x13,0x26,0x49,0x86,0x06,0x99,
0x9c,0x42,0x50,0xf4,0x91,0xef,0x98,0x7a,0x33,0x54,0x0b,0x43,0xed,0xcf,0xac,0x62,
0xe4,0xb3,0x1c,0xa9,0xc9,0x08,0xe8,0x95,0x80,0xdf,0x94,0xfa,0x75,0x8f,0x3f,0xa6,
0x47,0x07,0xa7,0xfc,0xf3,0x73,0x17,0xba,0x83,0x59,0x3c,0x19,0xe6,0x85,0x4f,0xa8,
0x68,0x6b,0x81,0xb2,0x71,0x64,0xda,0x8b,0xf8,0xeb,0x0f,0x4b,0x70,0x56,0x9d,0x35,
0x1e,0x24,0x0e,0x5e,0x63,0x58,0xd1,0xa2,0x25,0x22,0x7c,0x3b,0x01,0x21,0x78,0x87,
0xd4,0x00,0x46,0x57,0x9f,0xd3,0x27,0x52,0x4c,0x36,0x02,0xe7,0xa0,0xc4,0xc8,0x9e,
0xea,0xbf,0x8a,0xd2,0x40,0xc7,0x38,0xb5,0xa3,0xf7,0xf2,0xce,0xf9,0x61,0x15,0xa1,
0xe0,0xae,0x5d,0xa4,0x9b,0x34,0x1a,0x55,0xad,0x93,0x32,0x30,0xf5,0x8c,0xb1,0xe3,
0x1d,0xf6,0xe2,0x2e,0x82,0x66,0xca,0x60,0xc0,0x29,0x23,0xab,0x0d,0x53,0x4e,0x6f,
0xd5,0xdb,0x37,0x45,0xde,0xfd,0x8e,0x2f,0x03,0xff,0x6a,0x72,0x6d,0x6c,0x5b,0x51,
0x8d,0x1b,0xaf,0x92,0xbb,0xdd,0xbc,0x7f,0x11,0xd9,0x5c,0x41,0x1f,0x10,0x5a,0xd8,
0x0a,0xc1,0x31,0x88,0xa5,0xcd,0x7b,0xbd,0x2d,0x74,0xd0,0x12,0xb8,0xe5,0xb4,0xb0,
0x89,0x69,0x97,0x4a,0x0c,0x96,0x77,0x7e,0x65,0xb9,0xf1,0x09,0xc5,0x6e,0xc6,0x84,
0x18,0xf0,0x7d,0xec,0x3a,0xdc,0x4d,0x20,0x79,0xee,0x5f,0x3e,0xd7,0xcb,0x39,0x48
];
const SM4_FK = [0xA3B1BAC6, 0x56AA3350, 0x677D9197, 0xB27022DC];
public $_rk = [];
public $_block_size = 16;
public function __construct()
{
}
public function encrypt($key, $data)
{
$this->sM4KeySchedule($key);
$bytes = $this->pad($data, $this->_block_size);
$chunks = array_chunk($bytes, $this->_block_size);
$ciphertext = "";
foreach ($chunks as $chunk) {
$ciphertext .= $this->sM4Encrypt($chunk);
}
return base64_encode($ciphertext);
}
public function decrypt($key, $data)
{
$data = base64_decode($data);
if (strlen($data) < 0 || strlen($data) % $this->_block_size != 0) {
return false;
}
$this->sM4KeySchedule($key);
$bytes = unpack("C*", $data);
$chunks = array_chunk($bytes, $this->_block_size);
$plaintext = "";
foreach ($chunks as $chunk) {
$plaintext .= substr($this->sM4Decrypt($chunk), 0, 16);
}
$plaintext = $this->un_pad($plaintext);
return $plaintext;
}
private function sM4Decrypt($cipherText)
{
$x = [];
for ($j=0; $j<4; $j++) {
$x[$j]=($cipherText[$j*4]<<24) |($cipherText[$j*4+1]<<16)| ($cipherText[$j*4+2]<<8)|($cipherText[$j*4+3]);
}
for ($i=0; $i<32; $i++) {
$tmp = $x[$i+1]^$x[$i+2]^$x[$i+3]^$this->_rk[31-$i];
$buf= (self::SM4_SBOX[($tmp >> 24) & 0xFF]) << 24 |(self::SM4_SBOX[($tmp >> 16) & 0xFF]) << 16 |(self::SM4_SBOX[($tmp >> 8) & 0xFF]) << 8 |(self::SM4_SBOX[$tmp & 0xFF]);
$x[$i+4]=$x[$i]^($buf^$this->sm4Rotl32(($buf), 2)^ $this->sm4Rotl32(($buf), 10) ^ $this->sm4Rotl32(($buf), 18)^ $this->sm4Rotl32(($buf), 24));
}
$plainText = [];
for ($k=0; $k<4; $k++) {
$plainText[4*$k]=($x[35-$k]>> 24)& 0xFF;
$plainText[4*$k+1]=($x[35-$k]>> 16)& 0xFF;
$plainText[4*$k+2]=($x[35-$k]>> 8)& 0xFF;
$plainText[4*$k+3]=($x[35-$k])& 0xFF;
}
return $this->bytesToString($plainText);
}
private function sM4Encrypt($plainText)
{
$x = [];
for ($j=0; $j<4; $j++) {
$x[$j]=($plainText[$j*4]<<24) |($plainText[$j*4+1]<<16)| ($plainText[$j*4+2]<<8)|($plainText[$j*4+3]);
}
for ($i=0; $i<32; $i++) {
$tmp = $x[$i+1]^$x[$i+2]^$x[$i+3]^$this->_rk[$i];
$buf= (self::SM4_SBOX[($tmp >> 24) & 0xFF]) << 24 |(self::SM4_SBOX[($tmp >> 16) & 0xFF]) << 16 |(self::SM4_SBOX[($tmp >> 8) & 0xFF]) << 8 |(self::SM4_SBOX[$tmp & 0xFF]);
$x[$i+4]=$x[$i]^($buf^$this->sm4Rotl32(($buf), 2)^ $this->sm4Rotl32(($buf), 10) ^ $this->sm4Rotl32(($buf), 18)^ $this->sm4Rotl32(($buf), 24));
}
$cipherText = [];
for ($k=0; $k<4; $k++) {
$cipherText[4*$k]=($x[35-$k]>> 24)& 0xFF;
$cipherText[4*$k+1]=($x[35-$k]>> 16)& 0xFF;
$cipherText[4*$k+2]=($x[35-$k]>> 8)& 0xFF;
$cipherText[4*$k+3]=($x[35-$k])& 0xFF;
}
return $this->bytesToString($cipherText);
}
private function stringToBytes($string)
{
return unpack('C*', $string);
}
private function bytesToString($bytes)
{
return vsprintf(str_repeat('%c', count($bytes)), $bytes);
}
private function pad($data)
{
$bytes = $this->stringToBytes($data);
$rem = $this->_block_size - count($bytes) % $this->_block_size;
for ($i = 0; $i < $rem; $i++) {
array_push($bytes, $rem);
}
return $bytes;
}
private function un_pad($data)
{
$bytes = $this->stringToBytes($data);
$rem = $bytes[count($bytes)];
$bytes = array_slice($bytes, 0, count($bytes) - $rem);
return $this->bytesToString($bytes);
}
private function sm4Rotl32($buf, $n)
{
return (($buf << $n) & 0xffffffff) | ($buf >> (32-$n));
}
private function sM4KeySchedule($key)
{
$this->_rk = [];
$key = array_values(unpack("C*", $key));
$k = [];
for ($i=0; $i<4; $i++) {
$k[$i] = self::SM4_FK[$i]^(($key[4*$i]<<24) | ($key[4*$i+1]<<16) |($key[4*$i+2]<<8) | ($key[4*$i+3]));
}
for ($j=0; $j<32; $j++) {
$tmp = $k[$j+1]^$k[$j+2]^$k[$j+3]^ self::SM4_CK[$j];
$buf = (self::SM4_SBOX[($tmp >> 24) & 0xFF]) << 24 |(self::SM4_SBOX[($tmp >> 16) & 0xFF]) << 16 |(self::SM4_SBOX[($tmp >> 8) & 0xFF]) << 8 |(self::SM4_SBOX[$tmp & 0xFF]);
$k[$j+4]=$k[$j]^(($buf)^($this->sm4Rotl32(($buf), 13))^($this->sm4Rotl32(($buf), 23)));
$this->_rk[$j]=$k[$j+4];
}
}
}
$key = base64_decode("E1Fg4vX90nFUmP7lmsg6FA==");//加密使用的key(字符串)
// $key = '1478523698563214';
$data = '中国加中国加油中国加油中国加油中国加油中国加油中国加油中国加油中国加油中国加油中国加油中国加油中国加油油';
$sm4 = new SM4();
echo "加密key：" . $key . "<br />";
echo "明文：" . $data . "<br />";
$a = $sm4->encrypt($key, $data);
echo "加密结果：" . $a . "<br />";
$b = $sm4->decrypt($key, $a);
echo "解密结果：" . $b . "<br />";
利用DatePeriod 类获取两个日期之间的所有日期
官方文档：https://www.php.net/manual/zh/class.dateperiod.php
DatePeriod 类表示一个时间周期，时间周期内允许对一组日期和时间进行迭代，在指定的时间间隔内定期重复。
注意：8.2 新增 DatePeriod::INCLUDE_END_DATE
/**
* 获取两个日期间的所有日期
* @param $startDate 2023-04-01
* @param $endDate 2023-04-19
* @param $format
* @param $last 是否包含最后一天
* @return array
* @throws Exception
*/
function getDateRange($startDate, $endDate, $format = "Y-m-d", $last=true, $first=true)
{
$begin = new DateTime($startDate);
$end = new DateTime($endDate);
if($last){
$end->modify('+1 day');
}
$interval = new DateInterval('P1D'); // 1 Day
$exclude = 0;
if(!$first){
$exclude = DatePeriod::EXCLUDE_START_DATE;
}
$dateRange = new DatePeriod($begin, $interval, $end, $exclude);
$range = [];
foreach ($dateRange as $date) {
$range[] = $date->format($format);
}
return $range;
}windows下php7.4安装imagick、ImageMagick、GhostScript实现pdf转图片
实现word转pdf->pdf转图片->对转换后的图片处理完成后再生成pdf功能。
本地windows开发环境配置方式：
- 查看
phpinfo确定需下载的imagick扩展类型，下载地址为：https://windows.php.net/downloads/pecl/releases/imagick考虑到ImageMagick官网不支持历史版本下载，imagick扩展优先使用高版本，确保两者版本一致。