Php
Published: 13:21, Thursday 14 July 2011
Php is probably the programming language I used most.
Notes
What's this? See my article about Notes.
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sudo apt-get install php5 php5-mysql php5-xsl php-apc php5-xdebug
location of php.ini:
/etc/php5/cli/
/etc/php5/apache/
errors:
display_errors = On
error_reporting = E_ALL
or others
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
memory:
ini_set("memory_limit","32M");
for windows and apache:
in httpd.conf
to end of LoadModule list:
LoadModule php5_module "<+path to php5apache2_2.dll in php installation folder+>"
does not exist in non-thread-safe version
to end of httpd.conf:
PHPIniDir "path to php.ini dir"
after AddType lines
AddType application/x-httpd-php .php
DirectoryIndex index.php index.html
if mysqli missing: comment the ;extend=php_mysqli.dll restart, uncomment, restart
transliteration: iconv library needs utf-8 encoding
php tags
<?php ?>
omit closing tags
to avoid blanks
zend and drupal standard
operators:
modulo: %
string/array operations:
explode (delimiter, string)
formatted string: sprintf();
remove last element: array_pop()
remove first element: array_shift()
array keys
array_keys
for an object: get_object_vars
foreach:
foreach (array as value)
foreach (array as value => key)
replace
str_replace(search, replace, subject)
preg_replace(pattern, replacement, subject)
see Regexp
use \0 usw (escaped to \\0)
replace characters: strtr($str, "éàè", "eae");
convert urls to links:
$str = ereg_replace("[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]",
"<a href=\"\\0\">\\0</a>", $str);
my conventions:
define(BASE_PATH,'/web/path/to/main/dir');
execute: exec(cmd, output_arr, return_status)
string functions:
find first occurrence: strpos()
substr(str,start,length)
headers:
header("Content-type: text/javascript");
text/css
content-types
mime-types
image/gif, image/jpeg, text/plain, text/richtext, application/postscript, multipart
Content-Disponition: attachment; filename=fname.pdf
redirect: header("Location: http://www.example.com/";);
command line arguments:
$argv
function arguments as array: func_get_args()
get directory from path: dirname
mysql:
$result = mysql_query(...);
if (!$result) {
... mysql_error();
}
while ($row = mysql_fetch_assoc($result)) {
}
mysql_free_result($result);
mysql_connect(server, uname, password, link);
mysql_select_db
mysql_close()
mysql_fetch_assoc
mysql_query
mysql_error
arrays:
in_array(element, array)
sort
sort(), rsort()
keep keys: asort(), arsort()
files:
file_put_contents(file, string[, flags])
FILE_APPEND
overwrite:
fopen(file,'w');
fwrite(fd,string);
append: fopen(file,'a');
geshi:
import geshi.php
new GeSHi();
set_language
set_source
tab width:
set_header_type(GESHI_HEADER_DIV)
set_tab_width
parse_code
exec:
use escapeshellarg or escapeshellcmd
date/time:
now's timestamp: time()
create a timestamp/date:
mktime(hour, minute, secnd, month, day, year)
parse a time/date:
strtotime(time)
time formats
12 hour:
hh[ \t]meridian
hh[.:]MM[ \t]?meridian
hh[.:]MM[ \t]?meridian
hh[.:]MM[.:]II[ \t]?[0-9]+meridian
23 hour:
T?HH[.:]MM
T?HHMM
T?HH[.:]MM[.:]II
T?HHMMII
T?HH[.:]MM[.:]II[ \t]?(tzcorrection|tz)
T?HH[.:]MM[.:]IIfrac
tz|tzcorrection
date formats
many
iso:
YYMMDD
YY/MM/DD
yy-MM-DD
[+-]?YY-MM-DD
information
getdate(timestamp)
seconds: 0-59
minutes: 0-59
hours: 0-23
mday: 1-31
wday: 0(sunday)-6
mon: 1-12
year: 2001
yday: 0-365
weekday: Monday
month: January
0: timestamp
formatted
date(format, timestamp)
day of month: d
short text of day of week: D
day of month without 0: j
long text of day of week: l
numeric day of week: N
st, nd, rd, th: S (use jS)
numeric day of week (sunday: 0): w
day of year (start: 0): z
week of year: W
text of month: F
numeric month: m
short text of month: M
numeric month without 0: n
days in month: t
leap year (1 or 0): L
year number (depending on whole week number): o
year number: Y
two digit year number: y
am, pm: a
AM, PM: A
internet time: B
hour (01-12): g
hour (00-23): H
minutes (00-59): s
microseconds: u
timezone: e
daylight saving time: I
diff with GMT (+0200): O
diff with GMT (+02:00): P
timezone abbr: T
timezone offset in secs: Z
ISO 6601 (2004-02-12T15:19:21+00:00): c
RFC 2822 formatted date (Thu, 21 Dec 2000 16:01:07 +0200): r
time(): U
read ini files:
parse_ini_file(file, [process sections?])
[local] [remote]
and in .htaccess SetEnv ENVIRONMENT local
development phases: development, staging, production
pecl:
http-request and so on
install php5-dev libcurl3 libcurl-openssl-dev first
sudo pecl install pecl_http
variables:
get defined variables: get_defined_vars()
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