PHP cheatsheet Cheat Sheet by media_slave

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])

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 ()

ceil()

floor()

round()

abs()

mt_rand([min=0, max=RA­ND_MAX])

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 ] )

scandir(dir, [order])