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Migrating PHP scripts to MySQL from PostgreSQL

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[开发(php) 所属分类 开发(php) | 发布者 店小二04 | 时间 2016 | 作者 红领巾 ] 0人收藏点击收藏

I've recently had to work on a project where I needed toconvert some very basic php code thataccessed a postgresql database so that it would work with mysql . For the most part, this has beenfairly simple thanks to rpl . Many of PHP'sdatabase functions have very similar names, so I simply use rpl toconvert the existing code. Here's a simple bashscript that I put together to convert some of my postgresqlfunctions to mysql:

#!/bin/bash if [ ! -n "$1" ] then echo "Usage: `basename $0` " exit 1; fi X=$1 echo "---- Relacing pg_ with mysql_ in $X" rpl -R -x'.php' 'pg_pconnect' 'mysql_pconnect' $X rpl -R -x'.php' 'pg_connect' 'mysql_connect' $X rpl -R -x'.php' 'pg_query' 'mysql_query' $X rpl -R -x'.php' 'pg_fetch_row' 'mysq_fetch_row' $X rpl -R -x'.php' 'pg_fetch_assoc' 'mysq_fetch_assoc' $X rpl -R -x'.php' 'pg_close' 'mysq_close' $X rpl -R -x'.php' 'pg_num_rows' 'mysq_num_rows' $X rpl -R -x'.php' 'pg_numrows' 'mysq_num_rows' $X rpl -R -x'.php' 'pg_last_error' 'mysql_error' $X

Just in case your curious about converting from postgresql or mysql to sqlite, I've compiled the following table of analogous functions from php.net :

PostgreSQL MySQL SQLite pg_connect mysql_connect sqlite_open // open or create database pg_query mysql_query sqlite_query pg_fetch_row mysql_fetch_row sqlite_fetch_array (ordinal and associative) pg_fetch_assoc mysql_fetch_assoc pg_close mysql_close sqlite_close pg_num_rows or pg_numrows mysql_num_rows sqlite_num_rows

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