count_chars
Description
The count_chars of String for PHP return information about characters used in a string.
Syntax
count_chars(
string $string,
int $mode = 0
): array|stringParameters
string
The examined string.
mode
See return values.
Return
Depending on mode returns one of the following:
| Mode | Description |
|---|---|
| 0 | an array with the byte-value as key and the frequency of every byte as value. |
| 1 | same as 0 but only byte-values with a frequency greater than zero are listed. |
| 2 | same as 0 but only byte-values with a frequency equal to zero are listed. |
| 3 | a string containing all unique characters is returned. |
| 4 | a string containing all not used characters is returned. |
Examples
1 · string
<? $string = "abcde"; $return = count_chars($string); print_r($return);
Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
[4] => 0
[5] => 0
[6] => 0
[7] => 0
[8] => 0
[9] => 0
[10] => 0
[11] => 0
[12] => 0
[13] => 0
[14] => 0
[15] => 0
[16] => 0
[17] => 0
[18] => 0
[19] => 0
[20] => 0
[21] => 0
[22] => 0
[23] => 0
[24] => 0
[25] => 0
[26] => 0
[27] => 0
[28] => 0
[29] => 0
[30] => 0
[31] => 0
[32] => 0
[33] => 0
[34] => 0
[35] => 0
[36] => 0
[37] => 0
[38] => 0
[39] => 0
[40] => 0
[41] => 0
[42] => 0
[43] => 0
[44] => 0
[45] => 0
[46] => 0
[47] => 0
[48] => 0
[49] => 0
[50] => 0
[51] => 0
[52] => 0
[53] => 0
[54] => 0
[55] => 0
[56] => 0
[57] => 0
[58] => 0
[59] => 0
[60] => 0
[61] => 0
[62] => 0
[63] => 0
[64] => 0
[65] => 0
[66] => 0
[67] => 0
[68] => 0
[69] => 0
[70] => 0
[71] => 0
[72] => 0
[73] => 0
[74] => 0
[75] => 0
[76] => 0
[77] => 0
[78] => 0
[79] => 0
[80] => 0
[81] => 0
[82] => 0
[83] => 0
[84] => 0
[85] => 0
[86] => 0
[87] => 0
[88] => 0
[89] => 0
[90] => 0
[91] => 0
[92] => 0
[93] => 0
[94] => 0
[95] => 0
[96] => 0
[97] => 1
[98] => 1
[99] => 1
[100] => 1
[101] => 1
[102] => 0
[103] => 0
[104] => 0
[105] => 0
[106] => 0
[107] => 0
[108] => 0
[109] => 0
[110] => 0
[111] => 0
[112] => 0
[113] => 0
[114] => 0
[115] => 0
[116] => 0
[117] => 0
[118] => 0
[119] => 0
[120] => 0
[121] => 0
[122] => 0
[123] => 0
[124] => 0
[125] => 0
[126] => 0
[127] => 0
[128] => 0
[129] => 0
[130] => 0
[131] => 0
[132] => 0
[133] => 0
[134] => 0
[135] => 0
[136] => 0
[137] => 0
[138] => 0
[139] => 0
[140] => 0
[141] => 0
[142] => 0
[143] => 0
[144] => 0
[145] => 0
[146] => 0
[147] => 0
[148] => 0
[149] => 0
[150] => 0
[151] => 0
[152] => 0
[153] => 0
[154] => 0
[155] => 0
[156] => 0
[157] => 0
[158] => 0
[159] => 0
[160] => 0
[161] => 0
[162] => 0
[163] => 0
[164] => 0
[165] => 0
[166] => 0
[167] => 0
[168] => 0
[169] => 0
[170] => 0
[171] => 0
[172] => 0
[173] => 0
[174] => 0
[175] => 0
[176] => 0
[177] => 0
[178] => 0
[179] => 0
[180] => 0
[181] => 0
[182] => 0
[183] => 0
[184] => 0
[185] => 0
[186] => 0
[187] => 0
[188] => 0
[189] => 0
[190] => 0
[191] => 0
[192] => 0
[193] => 0
[194] => 0
[195] => 0
[196] => 0
[197] => 0
[198] => 0
[199] => 0
[200] => 0
[201] => 0
[202] => 0
[203] => 0
[204] => 0
[205] => 0
[206] => 0
[207] => 0
[208] => 0
[209] => 0
[210] => 0
[211] => 0
[212] => 0
[213] => 0
[214] => 0
[215] => 0
[216] => 0
[217] => 0
[218] => 0
[219] => 0
[220] => 0
[221] => 0
[222] => 0
[223] => 0
[224] => 0
[225] => 0
[226] => 0
[227] => 0
[228] => 0
[229] => 0
[230] => 0
[231] => 0
[232] => 0
[233] => 0
[234] => 0
[235] => 0
[236] => 0
[237] => 0
[238] => 0
[239] => 0
[240] => 0
[241] => 0
[242] => 0
[243] => 0
[244] => 0
[245] => 0
[246] => 0
[247] => 0
[248] => 0
[249] => 0
[250] => 0
[251] => 0
[252] => 0
[253] => 0
[254] => 0
[255] => 0
)
2 · mode · 0
<? $string = "abcde"; $mode = 0; $return = count_chars($string, $mode); print_r($return);
Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
[4] => 0
[5] => 0
[6] => 0
[7] => 0
[8] => 0
[9] => 0
[10] => 0
[11] => 0
[12] => 0
[13] => 0
[14] => 0
[15] => 0
[16] => 0
[17] => 0
[18] => 0
[19] => 0
[20] => 0
[21] => 0
[22] => 0
[23] => 0
[24] => 0
[25] => 0
[26] => 0
[27] => 0
[28] => 0
[29] => 0
[30] => 0
[31] => 0
[32] => 0
[33] => 0
[34] => 0
[35] => 0
[36] => 0
[37] => 0
[38] => 0
[39] => 0
[40] => 0
[41] => 0
[42] => 0
[43] => 0
[44] => 0
[45] => 0
[46] => 0
[47] => 0
[48] => 0
[49] => 0
[50] => 0
[51] => 0
[52] => 0
[53] => 0
[54] => 0
[55] => 0
[56] => 0
[57] => 0
[58] => 0
[59] => 0
[60] => 0
[61] => 0
[62] => 0
[63] => 0
[64] => 0
[65] => 0
[66] => 0
[67] => 0
[68] => 0
[69] => 0
[70] => 0
[71] => 0
[72] => 0
[73] => 0
[74] => 0
[75] => 0
[76] => 0
[77] => 0
[78] => 0
[79] => 0
[80] => 0
[81] => 0
[82] => 0
[83] => 0
[84] => 0
[85] => 0
[86] => 0
[87] => 0
[88] => 0
[89] => 0
[90] => 0
[91] => 0
[92] => 0
[93] => 0
[94] => 0
[95] => 0
[96] => 0
[97] => 1
[98] => 1
[99] => 1
[100] => 1
[101] => 1
[102] => 0
[103] => 0
[104] => 0
[105] => 0
[106] => 0
[107] => 0
[108] => 0
[109] => 0
[110] => 0
[111] => 0
[112] => 0
[113] => 0
[114] => 0
[115] => 0
[116] => 0
[117] => 0
[118] => 0
[119] => 0
[120] => 0
[121] => 0
[122] => 0
[123] => 0
[124] => 0
[125] => 0
[126] => 0
[127] => 0
[128] => 0
[129] => 0
[130] => 0
[131] => 0
[132] => 0
[133] => 0
[134] => 0
[135] => 0
[136] => 0
[137] => 0
[138] => 0
[139] => 0
[140] => 0
[141] => 0
[142] => 0
[143] => 0
[144] => 0
[145] => 0
[146] => 0
[147] => 0
[148] => 0
[149] => 0
[150] => 0
[151] => 0
[152] => 0
[153] => 0
[154] => 0
[155] => 0
[156] => 0
[157] => 0
[158] => 0
[159] => 0
[160] => 0
[161] => 0
[162] => 0
[163] => 0
[164] => 0
[165] => 0
[166] => 0
[167] => 0
[168] => 0
[169] => 0
[170] => 0
[171] => 0
[172] => 0
[173] => 0
[174] => 0
[175] => 0
[176] => 0
[177] => 0
[178] => 0
[179] => 0
[180] => 0
[181] => 0
[182] => 0
[183] => 0
[184] => 0
[185] => 0
[186] => 0
[187] => 0
[188] => 0
[189] => 0
[190] => 0
[191] => 0
[192] => 0
[193] => 0
[194] => 0
[195] => 0
[196] => 0
[197] => 0
[198] => 0
[199] => 0
[200] => 0
[201] => 0
[202] => 0
[203] => 0
[204] => 0
[205] => 0
[206] => 0
[207] => 0
[208] => 0
[209] => 0
[210] => 0
[211] => 0
[212] => 0
[213] => 0
[214] => 0
[215] => 0
[216] => 0
[217] => 0
[218] => 0
[219] => 0
[220] => 0
[221] => 0
[222] => 0
[223] => 0
[224] => 0
[225] => 0
[226] => 0
[227] => 0
[228] => 0
[229] => 0
[230] => 0
[231] => 0
[232] => 0
[233] => 0
[234] => 0
[235] => 0
[236] => 0
[237] => 0
[238] => 0
[239] => 0
[240] => 0
[241] => 0
[242] => 0
[243] => 0
[244] => 0
[245] => 0
[246] => 0
[247] => 0
[248] => 0
[249] => 0
[250] => 0
[251] => 0
[252] => 0
[253] => 0
[254] => 0
[255] => 0
)
3 · mode · 1
<? $string = "abcde"; $mode = 1; $return = count_chars($string, $mode); print_r($return);
Array
(
[97] => 1
[98] => 1
[99] => 1
[100] => 1
[101] => 1
)
4 · mode · 2
<? $string = "abcde"; $mode = 2; $return = count_chars($string, $mode); print_r($return);
Array
(
[0] => 0
[1] => 0
[2] => 0
[3] => 0
[4] => 0
[5] => 0
[6] => 0
[7] => 0
[8] => 0
[9] => 0
[10] => 0
[11] => 0
[12] => 0
[13] => 0
[14] => 0
[15] => 0
[16] => 0
[17] => 0
[18] => 0
[19] => 0
[20] => 0
[21] => 0
[22] => 0
[23] => 0
[24] => 0
[25] => 0
[26] => 0
[27] => 0
[28] => 0
[29] => 0
[30] => 0
[31] => 0
[32] => 0
[33] => 0
[34] => 0
[35] => 0
[36] => 0
[37] => 0
[38] => 0
[39] => 0
[40] => 0
[41] => 0
[42] => 0
[43] => 0
[44] => 0
[45] => 0
[46] => 0
[47] => 0
[48] => 0
[49] => 0
[50] => 0
[51] => 0
[52] => 0
[53] => 0
[54] => 0
[55] => 0
[56] => 0
[57] => 0
[58] => 0
[59] => 0
[60] => 0
[61] => 0
[62] => 0
[63] => 0
[64] => 0
[65] => 0
[66] => 0
[67] => 0
[68] => 0
[69] => 0
[70] => 0
[71] => 0
[72] => 0
[73] => 0
[74] => 0
[75] => 0
[76] => 0
[77] => 0
[78] => 0
[79] => 0
[80] => 0
[81] => 0
[82] => 0
[83] => 0
[84] => 0
[85] => 0
[86] => 0
[87] => 0
[88] => 0
[89] => 0
[90] => 0
[91] => 0
[92] => 0
[93] => 0
[94] => 0
[95] => 0
[96] => 0
[102] => 0
[103] => 0
[104] => 0
[105] => 0
[106] => 0
[107] => 0
[108] => 0
[109] => 0
[110] => 0
[111] => 0
[112] => 0
[113] => 0
[114] => 0
[115] => 0
[116] => 0
[117] => 0
[118] => 0
[119] => 0
[120] => 0
[121] => 0
[122] => 0
[123] => 0
[124] => 0
[125] => 0
[126] => 0
[127] => 0
[128] => 0
[129] => 0
[130] => 0
[131] => 0
[132] => 0
[133] => 0
[134] => 0
[135] => 0
[136] => 0
[137] => 0
[138] => 0
[139] => 0
[140] => 0
[141] => 0
[142] => 0
[143] => 0
[144] => 0
[145] => 0
[146] => 0
[147] => 0
[148] => 0
[149] => 0
[150] => 0
[151] => 0
[152] => 0
[153] => 0
[154] => 0
[155] => 0
[156] => 0
[157] => 0
[158] => 0
[159] => 0
[160] => 0
[161] => 0
[162] => 0
[163] => 0
[164] => 0
[165] => 0
[166] => 0
[167] => 0
[168] => 0
[169] => 0
[170] => 0
[171] => 0
[172] => 0
[173] => 0
[174] => 0
[175] => 0
[176] => 0
[177] => 0
[178] => 0
[179] => 0
[180] => 0
[181] => 0
[182] => 0
[183] => 0
[184] => 0
[185] => 0
[186] => 0
[187] => 0
[188] => 0
[189] => 0
[190] => 0
[191] => 0
[192] => 0
[193] => 0
[194] => 0
[195] => 0
[196] => 0
[197] => 0
[198] => 0
[199] => 0
[200] => 0
[201] => 0
[202] => 0
[203] => 0
[204] => 0
[205] => 0
[206] => 0
[207] => 0
[208] => 0
[209] => 0
[210] => 0
[211] => 0
[212] => 0
[213] => 0
[214] => 0
[215] => 0
[216] => 0
[217] => 0
[218] => 0
[219] => 0
[220] => 0
[221] => 0
[222] => 0
[223] => 0
[224] => 0
[225] => 0
[226] => 0
[227] => 0
[228] => 0
[229] => 0
[230] => 0
[231] => 0
[232] => 0
[233] => 0
[234] => 0
[235] => 0
[236] => 0
[237] => 0
[238] => 0
[239] => 0
[240] => 0
[241] => 0
[242] => 0
[243] => 0
[244] => 0
[245] => 0
[246] => 0
[247] => 0
[248] => 0
[249] => 0
[250] => 0
[251] => 0
[252] => 0
[253] => 0
[254] => 0
[255] => 0
)
5 · mode · 3
<? $string = "abcde"; $mode = 3; $return = count_chars($string, $mode); echo $return;
abcde
6 · mode · 4
<? $string = "abcde"; $mode = 4; $return = count_chars($string, $mode); echo $return;
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`fghijklmnopqrstuvwxyz{|}~�����������������������������������������������������������������������������������������������������������������������������7 · chr
<?
$string = "Hello World!";
$mode = 1;
$array = count_chars($string, $mode);
foreach($array as $key => $value)
{
echo "$value " . chr($key) . PHP_EOL;
}
1 1 ! 1 H 1 W 1 d 1 e 3 l 2 o 1 r
Links
String
- addcslashes
- addslashes
- bin2hex
- chop
- chr
- chunk_split
- convert_uudecode
- convert_uuencode
- crc32
- crypt
- echo
- explode
- fprintf
- get_html_translation_table
- hebrev
- hebrevc
- hex2bin
- html_entity_decode
- htmlentities
- htmlspecialchars
- htmlspecialchars_decode
- implode
- join
- lcfirst
- levenshtein
- localeconv
- ltrim
- md5
- md5_file
- metaphone
- nl_langinfo
- nl2br
- number_format
- ord
- parse_str
- printf
- quoted_printable_decode
- quoted_printable_encode
- quotemeta
- rtrim
- setlocale
- sha1
- sha1_file
- similar_text
- soundex
- sprintf
- sscanf
- str_contains
- str_decrement
- str_ends_with
- str_getcsv
- str_increment
- str_ireplace
- str_pad
- str_repeat
- str_replace
- str_rot13
- str_shuffle
- str_split
- str_starts_with
- str_word_count
- strcasecmp
- strchr
- strcmp
- strcoll
- strcspn
- strip_tags
- stripcslashes
- stripos
- stripslashes
- stristr
- strlen
- strnatcasecmp
- strnatcmp
- strncasecmp
- strncmp
- strpbrk
- strpos
- strrchr
- strrev
- strripos
- strrpos
- strspn
- strstr
- strtok
- strtolower
- strtoupper
- strtr
- substr
- substr_compare
- substr_count
- substr_replace
- trim
- ucfirst
- ucwords
- vfprintf
- vprintf
- vsprintf
- wordwrap
External
