Php Cheat Sheet
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1PHP Cheat Sheet
PHP Syntax
PHP Conditions &
Functions
File Functions
Loops
Opening/Closing Tags: <?php ?>
time(); // Current Unix Timestamp
fopen(filename, method);
Instruction Termination: ;
date(); // Formats Date/Time
feof(filehandle);
if (condition) { action }
Comments: /* */ or // or #
strtotime(); // Parses to Timestamp
fgets(filehandle);
elseif (condition) { action }
include("");
filesize(filename);
else { action }
require("");
fread(filehandle, filesize);
PHP Variables
mail(to,subject,message);
fwrite(filehandle, filedata);
switch (1st half of condition) {
fclose(filehandle)
case "2nd half of condition":
unlink(filename);
User-Defined Functions
$example_1 = 789;
action
$example_2 = 'value';
break;
GD Library Image
$example_3 = "value";
default:
function name() { }
action
Functions
name();
PHP Echo
break;
}
Predefined Variables
header()
echo 'string';
while (condition) {
imagecreate()
echo "string";
action
imagecreatetruecolor()
echo $variable;
increment condition variable
$_GET
imagecolorallocate()
}
$_POST
imagefilltoborder()
$_FILES
PHP Strings
imagejpeg(), imagegif(), imagepng()
do {
$_SERVER
imagedestroy()
action
$_COOKIE
imagecreatefromgif()
increment condition variable
$_SESSION
Escape Character: \
imagecreatefromjpeg()
}
$_REQUEST
Concatenation Operator: .
imagecreatefrompng()
while (condition);
$GLOBALS
Concatenation Assignment: .=
imagettftext()
$php_errormsg
imagefilter()
for (initialize; condition; increment)
imagecopyresampled()
PHP Operators
{ action to take }
Browser Interaction
PHP Arrays
Assignment: =
session_start();
Arithmetic: + - * / %
session_destroy();
Inc./Dec.: ++ --
array("value0", "value1");
setcookie(name, value, expiration);
Logical: && || !
array("key0" => "value0");
Comparison:
foreach (array as value) { action }
== != <> > < >= <=
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Parent category: Education