Top 100

This is a list of the 100 most common built-in PHP functions, and the 100 most common Drupal functions in the Drupal source code. Language constructs and reserved words are excluded from the count (foreach, for, while, list, isset, etc).

There were 1350 calls to 235 built-in functions in the source code, and 5483 calls to 1032 DRUPAL functions.
The Top 100 Built-in PHP Functions in Drupal

Rank
Function
Occurrences
Per Cent


1
define
94
6.75


2
implode
79
5.68


3
array_merge
63
4.53


4
substr
58
4.17


5
trim
38
2.73


6
str_replace
38
2.73


7
count
37
2.66


8
preg_replace
35
2.51


9
array_pop
33
2.37


10
array_shift
31
2.23


11
explode
30
2.16


12
ini_set
29
2.08


13
header
27
1.94


14
urldecode
23
1.65


15
call_user_func_array
22
1.58


16
func_get_args
21
1.51


17
chr
17
1.22


18
array_keys
16
1.15


19
array_unshift
15
1.08


20
preg_match
15
1.08


21
preg_replace_callback
15
1.08


22
in_array
15
1.08


23
is_array
14
1.01


24
strtr
14
1.01


25
array_filter
13
0.93


26
strpos
12
0.86


27
md5
12
0.86


28
parse_url
12
0.86


29
dirname
11
0.79


30
unserialize
11
0.79


31
max
11
0.79


32
gmdate
10
0.72


33
strlen
9
0.65


34
printf
9
0.65


35
time
9
0.65


36
pg_query
9
0.65


37
serialize
8
0.57


38
round
8
0.57


39
array_walk
8
0.57


40
array_flip
8
0.57


41
date
8
0.57


42
array_unique
8
0.57


43
ksort
8
0.57


44
str_repeat
7
0.50


45
mysqli_query
7
0.50


46
array_map
7
0.50


47
asort
7
0.50


48
mysql_query
7
0.50


49
file_get_contents
6
0.43


50
function_exists
6
0.43


51
register_shutdown_function
6
0.43


52
array_reverse
6
0.43


53
ceil
5
0.36


54
fclose
5
0.36


55
urlencode
5
0.36


56
xml_parser_create
5
0.36


57
uasort
5
0.36


58
file
5
0.36


59
strstr
5
0.36


60
basename
5
0.36


61
base64_encode
5
0.36


62
bcmod
5
0.36


63
min
5
0.36


64
strtolower
5
0.36


65
floor
4
0.29


66
array_merge_recursive
4
0.29


67
array_slice
4
0.29


68
preg_match_all
4
0.29


69
ob_start
4
0.29


70
mysql_connect
4
0.29


71
abs
4
0.29


72
realpath
4
0.29


73
ltrim
4
0.29


74
mail
4
0.29


75
preg_split
4
0.29


76
base64_decode
4
0.29


77
chmod
4
0.29


78
array_key_exists
4
0.29


79
call_user_func
4
0.29


80
ob_end_clean
4
0.29


81
ord
4
0.29


82
array_values
3
0.22


83
is_numeric
3
0.22


84
xml_parser_free
3
0.22


85
debug_backtrace
3
0.22


86
pg_last_error
3
0.22


87
is_dir
3
0.22


88
intval
3
0.22


89
xml_set_character_data_handler
3
0.22


90
is_string
3
0.22


91
stripslashes
3
0.22


92
sort
3
0.22


93
fopen
3
0.22


94
ini_get
3
0.22


95
xml_set_element_handler
3
0.22


96
trigger_error
3
0.22


97
extract
3
0.22


98
is_object
3
0.22


99
array_diff
3
0.22


100
link
3
0.22

Total Drupal Functions Used: 1647
Total Custom Drupal Function calls in Drupal source code: 6819.

The Top 100 Drupal Native Functions

Rank
Function
Occurrences
Per Cent


1
t
1133
16.62


2
theme
273
4.00


3
db_query
230
3.37


4
drupal_set_message
214
3.14


5
variable_get
148
2.17


6
drupal_render
113
1.66


7
form_set_error
89
1.31


8
check_plain
80
1.17


9
watchdog
78
1.14


10
l
73
1.07


11
st
68
1.00


12
drupal_set_title
66
0.97


13
drupal_get_form
59
0.87


14
variable_set
52
0.76


15
system_settings_form
43
0.63


16
cache_clear_all
43
0.63


17
update_sql
40
0.59


18
drupal_goto
39
0.57


19
drupal_add_js
38
0.56


20
db_result
34
0.50


21
url
34
0.50


22
theme_get_setting
33
0.48


23
confirm_form
32
0.47


24
base_path
27
0.40


25
pager_query
27
0.40


26
drupal_add_css
27
0.40


27
module_invoke
27
0.40


28
format_date
26
0.38


29
check_url
26
0.38


30
drupal_not_found
25
0.37


31
db_fetch_object
25
0.37


32
module_invoke_all
22
0.32


33
drupal_attributes
19
0.28


34
drupal_alter
19
0.28


35
drupal_map_assoc
19
0.28


36
db_query_range
18
0.26


37
language_list
17
0.25


38
get_t
17
0.25


39
drupal_add_tabledrag
17
0.25


40
xmlrpc_error
17
0.25


41
language_default
16
0.23


42
arg
16
0.23


43
template_preprocess
16
0.23


44
_locale_import_message
15
0.22


45
format_plural
15
0.22


46
stdClass
15
0.22


47
_user_mail_text
14
0.21


48
drupal_bootstrap
14
0.21


49
menu_get_item
14
0.21


50
drupal_set_header
13
0.19


51
menu_rebuild
13
0.19


52
cache_set
12
0.18


53
db_add_field
12
0.18


54
_db_query
12
0.18


55
form_error
12
0.18


56
variable_del
12
0.18


57
db_fetch_array
12
0.18


58
module_list
12
0.18


59
drupal_mail
11
0.16


60
drupal_get_destination
11
0.16


61
drupal_load
11
0.16


62
batch_process
11
0.16


63
batch_get
11
0.16


64
drupal_access_denied
11
0.16


65
hook_schema
10
0.15


66
form_set_value
10
0.15


67
_db_query_callback
10
0.15


68
node_load
9
0.13


69
node_get_types
9
0.13


70
module_rebuild_cache
9
0.13


71
menu_link_save
9
0.13


72
file_directory_path
9
0.13


73
form_clean_id
9
0.13


74
conf_path
9
0.13


75
image_get_info
9
0.13


76
update_get_projects
9
0.13


77
db_change_field
9
0.13


78
drupal_json
8
0.12


79
file_scan_directory
8
0.12


80
batch_set
8
0.12


81
_form_set_class
8
0.12


82
cache_get
8
0.12


83
module_load_include
8
0.12


84
tablesort_sql
8
0.12


85
install_task_list
8
0.12


86
_db_create_key_sql
8
0.12


87
_db_error_page
8
0.12


88
drupal_get_normal_path
8
0.12


89
b
8
0.12


90
hook_forms
7
0.10


91
drupal_maintenance_theme
7
0.10


92
drupal_set_content
7
0.10


93
module_load_install
7
0.10


94
file_create_path
7
0.10


95
drupal_query_string_encode
7
0.10


96
menu_link_delete
7
0.10


97
_db_create_field_sql
7
0.10


98
menu_execute_active_handler
7
0.10


99
module_exists
7
0.10


100
_locale_get_predefined_list
7
0.10

0 comments