How can I correctly configure GD support for PHP? I am getting an error calling imagettfbbox()

问题

Using Symfony2.0 and Gregwar Captcha Bundle for Symfony 2.0 Operating System: Mac OS 10.10 (Yosemite)

After having installed the CaptchaBundle following the instructions, the first time I use it, I get the following error:

Fatal error: Call to undefined function Gregwar\CaptchaBundle\Generator\imagettfbbox() in /Users/pgbonino/Sites/preparatest/vendor/bundles/Gregwar/CaptchaBundle/Generator/CaptchaGenerator.php on line 176

My phpinfo informs this:

<h2><a name="module_gd">gd</a></h2>
<table border="0" cellpadding="3" width="600">
<tbody><tr><td class="e">GD Support </td><td class="v">enabled </td></tr>
<tr><td class="e">GD Version </td><td class="v">bundled (2.1.0 compatible) </td></tr>
<tr><td class="e">GIF Read Support </td><td class="v">enabled </td></tr>
<tr><td class="e">GIF Create Support </td><td class="v">enabled </td></tr>
<tr><td class="e">JPEG Support </td><td class="v">enabled </td></tr>
<tr><td class="e">libJPEG Version </td><td class="v">9 compatible </td></tr>
<tr><td class="e">WBMP Support </td><td class="v">enabled </td></tr>
<tr><td class="e">XBM Support </td><td class="v">enabled </td></tr>
</tbody></table>

So, apparently the GD module is correctly loaded.

Any idea on the error I am getting?

回答1:

Comparing your phpinfo() output to mine I find that although GD is active FreeType is missing in your PHP installation. The PHP docs on imagettfbbox() say that "This function requires both the GD library and the FreeType library."

Here is the corresponding section of my phpinfo():

gd

GD Support  enabled
GD Version  bundled (2.1.0 compatible)
FreeType Support    enabled
FreeType Linkage    with freetype
FreeType Version    2.5.3
GIF Read Support    enabled
GIF Create Support  enabled
JPEG Support    enabled
libJPEG Version 8
PNG Support enabled
libPNG Version  1.6.13
WBMP Support    enabled
XBM Support enabled

The Configure Command block at the beginning of phpinfo should list freetype too:

'./configure' '--prefix=/usr/local/Cellar/php55/5.5.18' '--localstatedir=/usr/local/var' '--sysconfdir=/usr/local/etc/php/5.5' '--with-config-file-path=/usr/local/etc/php/5.5' '--with-config-file-scan-dir=/usr/local/etc/php/5.5/conf.d' '--with-iconv-dir=/usr' '--enable-dba' '--with-ndbm=/usr' '--enable-exif' '--enable-intl' '--enable-soap' '--enable-wddx' '--enable-ftp' '--enable-sockets' '--enable-zip' '--enable-shmop' '--enable-sysvsem' '--enable-sysvshm' '--enable-sysvmsg' '--enable-mbstring' '--enable-mbregex' '--enable-bcmath' '--enable-calendar' '--with-zlib=/usr/local/opt/zlib' '--with-ldap' '--with-ldap-sasl=/usr' '--with-xmlrpc' '--with-kerberos=/usr' '--with-gd' '--enable-gd-native-ttf' '--with-freetype-dir=/usr/local/opt/freetype' '--with-icu-dir=/usr/local/opt/icu4c' '--with-jpeg-dir=/usr/local/opt/jpeg' '--with-png-dir=/usr/local/opt/libpng' '--with-gettext=/usr/local/opt/gettext' '--with-libedit' '--with-unixODBC=/usr/local/opt/unixodbc' '--with-pdo-odbc=unixODBC,/usr/local/opt/unixodbc' '--mandir=/usr/local/Cellar/php55/5.5.18/share/man' '--with-mhash' '--with-curl' '--with-snmp=/usr' '--with-bz2=/usr' '--disable-debug' '--with-openssl=/usr' '--with-xsl=/usr' '--with-apxs2=/usr/sbin/apxs' '--libexecdir=/usr/local/Cellar/php55/5.5.18/libexec' '--with-mysql-sock=/tmp/mysql.sock' '--with-mysqli=mysqlnd' '--with-mysql=mysqlnd' '--with-pdo-mysql=mysqlnd' '--enable-pcntl' '--enable-zend-signals' '--enable-dtrace' '--enable-opcache'

POSSIBLE SOLUTION

From your comment on my instructions to install a full PHP on OSX Yosemite I know that you have installed PHP using the Homebrew package manager. So you might want to try this to solve your problem:

brew install freetype

来源：https://stackoverflow.com/questions/29402642/how-can-i-correctly-configure-gd-support-for-php-i-am-getting-an-error-calling

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php

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captcha

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