Change the php composer uses

Change the php composer uses

I am using to start laravel. Therefore I have installed it with composer
and somehow it doesn't work after installation i dont see the public
folder.. I tried the same steps on my raspberry and there it is installed
as it should be; I think the reason that the installation on my macbook
doesn't work is that laravel/composer listens to the native php build from
my macbook..(5.3.5) ( I am using the one I installed with homebrew php
5.5.3) I have tried many things but with no result. is there a way to
delete composer and install it again? ( because i installed the homebrew
php a while after installing composer )
Although ,, if I do composer show I get this
composer show
platform:
ext-bcmath 0 The bcmath PHP extension
ext-bz2 0 The bz2 PHP extension
ext-calendar 0 The calendar PHP extension
ext-ctype 0 The ctype PHP extension
ext-curl 0 The curl PHP extension
ext-date 5.5.3 The date PHP extension
ext-dba 0 The dba PHP extension
ext-dom 20031129 The dom PHP extension
ext-ereg 0 The ereg PHP extension
ext-exif 0 The exif PHP extension
ext-fileinfo 1.0.5-dev The fileinfo PHP extension
ext-filter 0.11.0 The filter PHP extension
ext-ftp 0 The ftp PHP extension
ext-gd 0 The gd PHP extension
ext-gettext 0 The gettext PHP extension
ext-hash 1.0 The hash PHP extension
ext-iconv 0 The iconv PHP extension
ext-json 1.2.1 The json PHP extension
ext-ldap 0 The ldap PHP extension
ext-libxml 0 The libxml PHP extension
ext-mbstring 0 The mbstring PHP extension
ext-mcrypt 0 The mcrypt PHP extension
ext-mhash 0 The mhash PHP extension
ext-mysql 1.0 The mysql PHP extension
ext-mysqli 0.1 The mysqli PHP extension
ext-mysqlnd 0 The mysqlnd PHP extension
ext-odbc 1.0 The odbc PHP extension
ext-openssl 0 The openssl PHP extension
ext-pcntl 0 The pcntl PHP extension
ext-pcre 0 The pcre PHP extension
ext-PDO 1.0.4dev The PDO PHP extension
ext-pdo_mysql 1.0.2 The pdo_mysql PHP extension
ext-PDO_ODBC 1.0.1 The PDO_ODBC PHP extension
ext-pdo_sqlite 1.0.1 The pdo_sqlite PHP extension
ext-Phar 2.0.1 The Phar PHP extension
ext-posix 0 The posix PHP extension
ext-readline 5.5.3 The readline PHP extension
ext-Reflection 0 The Reflection PHP extension
ext-session 0 The session PHP extension
ext-shmop 0 The shmop PHP extension
ext-SimpleXML 0.1 The SimpleXML PHP extension
ext-snmp 0.1 The snmp PHP extension
ext-soap 0 The soap PHP extension
ext-sockets 0 The sockets PHP extension
ext-SPL 0.2 The SPL PHP extension
ext-sqlite3 0.7-dev The sqlite3 PHP extension
ext-sysvmsg 0 The sysvmsg PHP extension
ext-sysvsem 0 The sysvsem PHP extension
ext-sysvshm 0 The sysvshm PHP extension
ext-tokenizer 0.1 The tokenizer PHP extension
ext-wddx 0 The wddx PHP extension
ext-xml 0 The xml PHP extension
ext-xmlreader 0.1 The xmlreader PHP extension
ext-xmlrpc 0.51 The xmlrpc PHP extension
ext-xmlwriter 0.1 The xmlwriter PHP extension
ext-xsl 0.1 The xsl PHP extension
ext-zip 1.11.0 The zip PHP extension
ext-zlib 2.0 The zlib PHP extension
lib-curl 7.24.0 The curl PHP library
lib-iconv 1.11 The iconv PHP library
lib-libxml 2.7.8 The libxml PHP library
lib-openssl 0.9.8.18 The openssl PHP library
lib-pcre 8.32 The pcre PHP library
lib-xsl 1.1.26 The xsl PHP library
php 5.5.3 The PHP interpreter
php-64bit 5.5.3 The PHP interpreter (64bit)
Is there a way to do one of this things?