PHP擴(kuò)展開(kāi)發(fā)-分享會(huì)

1、PHP擴(kuò)展開(kāi)發(fā)更多內(nèi)容請(qǐng)見(jiàn)2015-04-14 下午分享會(huì)1NTS or TSNone Thread Safe(非線程安全)Thread Safe(線程安全)2開(kāi)發(fā)環(huán)境Windows OR LinuxX86 OR X643Windows環(huán)境VC6（Microsoft Visual C+ 6.0）VC9（ Microsoft Visual Studio 2008）VC11（ Microsoft Visual Studio 2012）Cygwin64 OR Cygwin_X86Php-depsphp-sdk-binary-toolsPhp源碼4Windows開(kāi)發(fā)流程Buildconfconfigu

2、reext_skel_win32.php 參數(shù) -extname 擴(kuò)展名稱 -proto 定義文件編譯5Linux開(kāi)發(fā)流程ext_skel -extname 擴(kuò)展名稱 -proto 定義文件config.m4PHP_ARG_WITH(example, for example support, -with-example=FILE Include example support. the optional path to example-config)PHP_ARG_WITH(example-extra, for extra libraries for example, -with-exampl

3、e-extra=DIR example: Location of extra libraries for example, no, no)6Linux開(kāi)發(fā)流程Phpizeconfigure -with-php-config=/usr/local/php/bin/php-configMakeMake install7函數(shù)聲明宏語(yǔ)義PHP_MINIT_FUNCTION()當(dāng)PHP被裝載時(shí)，模塊啟動(dòng)函數(shù)即被引擎調(diào)用。這使得引擎做一些例如資源類型，注冊(cè)INI變量等的一次初始化。PHP_MSHUTDOWN_FUNCTION()當(dāng)PHP完全關(guān)閉時(shí)，模塊關(guān)閉函數(shù)即被引擎調(diào)用。通常用于注銷INI條目PHP_R

4、INIT_FUNCTION()在每次PHP請(qǐng)求開(kāi)始，請(qǐng)求前啟動(dòng)函數(shù)被調(diào)用。通常用于管理請(qǐng)求前邏輯。PHP_RSHUTDOWN_FUNCTION()在每次PHP請(qǐng)求結(jié)束后，請(qǐng)求前關(guān)閉函數(shù)被調(diào)用。經(jīng)常應(yīng)用在清理請(qǐng)求前啟動(dòng)函數(shù)的邏輯。PHP_MINFO_FUNCTION()調(diào)用phpinfo()時(shí)模塊信息函數(shù)被呼叫，從而打印出模塊信息。8PHP的變量typedef struct _zval_struct zvalue_value value;zend_uint refcount;zend_uchar type;zend_uchar is_ref; zval;typedef union _zvalue

5、_value long lval;double dval;struct char *val;int len; str;HashTable *ht;zend_object_value obj; zvalue_value;typedef struct _zval_struct zval;9宏訪問(wèn)對(duì)象C類型Z_LVAL, Z_LVAL_P,Z_LVAL_PP整型值longZ_BVAL, Z_BVAL_P,Z_BVAL_PP布爾值z(mì)end_boolZ_DVAL, Z_DVAL_P,Z_DVAL_PP浮點(diǎn)值doubleZ_STRVAL, Z_STRVAL_P,Z_STRVAL_PP字符串值char *Z

6、_STRLEN, Z_STRLEN_P, Z_STRLEN_PP字符串長(zhǎng)度值intZ_RESVAL, Z_RESVAL_P,Z_RESVAL_PP資源值longZ_ARRVAL, Z_ARRVAL_P,Z_ARRVAL_PP聯(lián)合數(shù)組HashTable *Z_TYPE, Z_TYPE_P,Z_TYPE_PPZval類型Enumeration (IS_NULL, IS_LONG, IS_DOUBLE, IS_STRING, IS_ARRAY, IS_OBJECT, IS_BOOL, IS_RESOURCE)Z_OBJPROP,Z_OBJPROP_P,Z_OBJPROP_PP對(duì)象屬性hash（本章不

7、會(huì)談到）HashTable *Z_OBJCE, Z_OBJCE_P,Z_OBJCE_PP對(duì)象的類信息（本章不會(huì)談到）zend_class_entry10獲取參數(shù)zend_parse_parameters(int num_args TSRMLS_DC, char *type_spec,);類型指定符對(duì)應(yīng)的C類型描述llong符號(hào)整數(shù)ddouble浮點(diǎn)數(shù)schar *, int二進(jìn)制字符串，長(zhǎng)度bzend_bool邏輯型（1或0）rzval *資源（文件指針，數(shù)據(jù)庫(kù)連接等）azval *聯(lián)合數(shù)組ozval *任何類型的對(duì)象Ozval *指定類型的對(duì)象。需要提供目標(biāo)對(duì)象的類類型zzval *無(wú)任何操

8、作的zval11返回值設(shè)置返回值并且結(jié)束函數(shù)設(shè)置返回值宏返回類型和參數(shù)RETURN_LONG(l)RETVAL_LONG(l)整數(shù)RETURN_BOOL(b)RETVAL_BOOL(b)布爾數(shù)(1或0)RETURN_NULL()RETVAL_NULL()NULLRETURN_DOUBLE(d)RETVAL_DOUBLE(d)浮點(diǎn)數(shù)RETURN_STRING(s, dup)RETVAL_STRING(s, dup)字符串。如果dup為1，引擎會(huì)調(diào)用estrdup()重復(fù)s，使用拷貝。如果dup為0，就使用sRETURN_STRINGL(s, l, dup)RETVAL_STRINGL(s, l,

9、 dup)長(zhǎng)度為l的字符串值。與上一個(gè)宏一樣，但因?yàn)閟的長(zhǎng)度被指定，所以速度更快。RETURN_TRUERETVAL_TRUE返回布爾值true。注意到這個(gè)宏沒(méi)有括號(hào)。RETURN_FALSERETVAL_FALSE返回布爾值false。注意到這個(gè)宏沒(méi)有括號(hào)。RETURN_RESOURCE(r)RETVAL_RESOURCE(r)資源句柄。12自定義php函數(shù)?php$i=3;echo self_concat(“Hello World, $i);13Eg.1PHP_FUNCTION(self_concat)char *str = NULL;int argc = ZEND_NUM_ARGS();int str_len;long n;char *result; char *ptr; int result_length; if (zend_parse_parameters(argc TSRMLS_CC, sl, &str, &str_len, &n) = FAILURE)return;14Eg.2result_length = (str_len * n);result = (char *) emall