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Addd embed docs
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@@ -493,3 +493,75 @@ static-php-cli 开放的方法非常多,文档中无法一一列举,但只
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- 如果你想重新构建一次,但不重新下载源码,可以先 `rm -rf buildroot source` 删除编译目录和源码目录,然后重新构建。
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- 如果你想更新某个依赖的版本,可以使用 `bin/spc del-download <source-name>` 删除指定的源码,然后使用 `download <source-name>` 重新下载。
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- 如果你想更新所有依赖的版本,可以使用 `bin/spc download --clean` 删除所有下载的源码,然后重新下载。
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## embed 使用
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如果你想将 static-php 嵌入到其他 C 语言程序中,可以使用 `--build-embed` 构建一个 embed 版本的 PHP。
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```bash
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bin/spc build {your extensions} --build-embed --debug
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```
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在通常的情况下,PHP embed 编译后会生成 `php-config`。对于 static-php,我们提供了 `spc-config`,用于获取编译时的参数。
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另外,在使用 embed SAPI(libphp.a)时,你需要使用和编译 libphp 相同的编译器,否则会出现链接错误。
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下面是 spc-config 的基本用法:
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```bash
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# output all flags and options
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bin/spc spc-config curl,zlib,phar,openssl
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# output libs
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bin/spc spc-config curl,zlib,phar,openssl --libs
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# output includes
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bin/spc spc-config curl,zlib,phar,openssl --includes
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```
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默认情况下,static-php 在不同系统使用的编译器分别是:
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- macOS: `clang`
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- Linux (Alpine Linux): `gcc`
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- Linux (glibc based distros, x86_64): `/usr/local/musl/bin/x86_64-linux-musl-gcc`
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- Linux (glibc based distros, aarch64): `/usr/local/musl/bin/aarch64-linux-musl-gcc`
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- FreeBSD: `clang`
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下面是一个使用 embed SAPI 的例子:
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```c
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// embed.c
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#include <sapi/embed/php_embed.h>
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int main(int argc,char **argv){
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PHP_EMBED_START_BLOCK(argc,argv)
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zend_file_handle file_handle;
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zend_stream_init_filename(&file_handle,"embed.php");
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if(php_execute_script(&file_handle) == FAILURE){
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php_printf("Failed to execute PHP script.\n");
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}
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PHP_EMBED_END_BLOCK()
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return 0;
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}
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```
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```php
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<?php
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// embed.php
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echo "Hello world!\n";
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```
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```bash
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# compile in debian/ubuntu x86_64
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/usr/local/musl/bin/x86_64-linux-musl-gcc embed.c $(bin/spc spc-config bcmath,zlib) -static -o embed
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# compile in macOS/FreeBSD
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clang embed.c $(bin/spc spc-config bcmath,zlib) -o embed
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./embed
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# out: Hello world!
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```
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