PHP cheatsheet Cheat Sheet

A Programming › PHP cheat sheet in English by media_slave

PHP Common Cheat Sheet

PHP Development LAMP Programming Web

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PHP Arrays

array_filter (input, [callback])

array_key_exists (strtolower($key), array_change_key_case($search))

array_walk (&$array, callback(val,key), userdata)

array_map (callback, array1, [array2,...])

array_search (needle, haystack, [strict])

array_push (&$array, var1,[var2])

array_pop (&$array)

array_unshift (&$array, var1,[var2])

array_shift (&$array)

count(array)

in_array (needle, haystack, strict)

array_unique (array, [sort_flag])

array_diff(array1, array2, [array3...])

array_intersect(array1, array2, [array3...])

array_rand(array, [num])

PHP String

substr_count (haystack, needle,[offset, length])

strpos (haystack, needle, [offset]) (compare only with ===)

stripos (haystack, needle, [offset])

strrpos (haystack, needle, [offset])

strripos (haystack, needle, [offset])

ord (symbol)

chr (ascii)

strip_tags (str, [allowable_tags])

number_format (number, decimals, dec.point, th. sep)

join (glue, array)

strstr (haystack, needle, [before_needle])

strlen (string)

parse_str (string, [& array])

flush ()

PHP Math

ceil()

floor()

round()

abs()

mt_rand([min=0, max=RAND_MAX])

PHP fopen() modes

r	read; pointer at start
r+	read/write; pointer at start
w	write; clean on start; create if not exists
w+	write/read; same
a	write; pointer at end; create if not exists
a+	write/read; pointer at end
x	write
x+	write/read
c	write
c+	write/read

PHP Filesystem

is_dir (filename)

is_file (filename)

is_executable (filename)

is_link (filename)

is_writable (filename)

is_readable (filename)

file_exists (filename)

file_get_contents (filename,[include_path,resource,offset,maxlen])

disk_total_space (dir)

disk_free_space (dir)

dirname (path)

realpath (filename)

pathinfo (path [,PATHINFO_DIRNAME | PATHINFO_BASENAME | PATHINFO_EXTENSION | PATHINFO_FILENAME ] )