ord string function to get ASCII value of any character in PHP

We can get the ASCII value of any character by using ord() function. Here is an example

echo ord('&');

The output is here

Using ASCII value we can get the character by using chr() string function

Example 1: Getting ASCII Value of Special Characters

<?php
echo ord('$');  // Output: 36
echo ord('@');  // Output: 64
?>

Example 2: Converting First Character of a String to ASCII

<?php
$str = 'Hello';
echo ord($str);  // Output: 72 (ASCII value of 'H')
?>

We can display a table by using for loop to get all the chars and its ASCII value like this.

$i=0;
echo "<table><tr><td>";
for($i==0;$i<=127;$i++){
echo " chr($i) = ".chr($i). " - ". ord(chr($i))."<br>"; 
if($i%40 == 0 and $i>39){echo "</td><td valign=top>";}
}
echo "</td></tr></table>";

The output is here

chr(0) = - 0
chr(1) = - 1
chr(2) = - 2
chr(3) = - 3
chr(4) = - 4
chr(5) = - 5
chr(6) = - 6
chr(7) = - 7
chr(8) = - 8
chr(9) = - 9
chr(10) = - 10
chr(11) = - 11
chr(12) = - 12
chr(13) = - 13
chr(14) = - 14
chr(15) = - 15
chr(16) = - 16
chr(17) = - 17
chr(18) = - 18
chr(19) = - 19
chr(20) = - 20
chr(21) = - 21
chr(22) = - 22
chr(23) = - 23
chr(24) = - 24
chr(25) = - 25
chr(26) = - 26
chr(27) = - 27
chr(28) = - 28
chr(29) = - 29
chr(30) = - 30
chr(31) = - 31
chr(32) = - 32
chr(33) = ! - 33
chr(34) = " - 34
chr(35) = # - 35
chr(36) = $ - 36
chr(37) = % - 37
chr(38) = & - 38
chr(39) = ' - 39
chr(40) = ( - 40

chr(41) = ) - 41
chr(42) = * - 42
chr(43) = + - 43
chr(44) = , - 44
chr(45) = - - 45
chr(46) = . - 46
chr(47) = / - 47
chr(48) = 0 - 48
chr(49) = 1 - 49
chr(50) = 2 - 50
chr(51) = 3 - 51
chr(52) = 4 - 52
chr(53) = 5 - 53
chr(54) = 6 - 54
chr(55) = 7 - 55
chr(56) = 8 - 56
chr(57) = 9 - 57
chr(58) = : - 58
chr(59) = ; - 59
chr(60) = < - 60
chr(61) = = - 61
chr(62) = > - 62
chr(63) = ? - 63
chr(64) = @ - 64
chr(65) = A - 65
chr(66) = B - 66
chr(67) = C - 67
chr(68) = D - 68
chr(69) = E - 69
chr(70) = F - 70
chr(71) = G - 71
chr(72) = H - 72
chr(73) = I - 73
chr(74) = J - 74
chr(75) = K - 75
chr(76) = L - 76
chr(77) = M - 77
chr(78) = N - 78
chr(79) = O - 79
chr(80) = P - 80

chr(81) = Q - 81
chr(82) = R - 82
chr(83) = S - 83
chr(84) = T - 84
chr(85) = U - 85
chr(86) = V - 86
chr(87) = W - 87
chr(88) = X - 88
chr(89) = Y - 89
chr(90) = Z - 90
chr(91) = [ - 91
chr(92) = \ - 92
chr(93) = ] - 93
chr(94) = ^ - 94
chr(95) = _ - 95
chr(96) = ` - 96
chr(97) = a - 97
chr(98) = b - 98
chr(99) = c - 99
chr(100) = d - 100
chr(101) = e - 101
chr(102) = f - 102
chr(103) = g - 103
chr(104) = h - 104
chr(105) = i - 105
chr(106) = j - 106
chr(107) = k - 107
chr(108) = l - 108
chr(109) = m - 109
chr(110) = n - 110
chr(111) = o - 111
chr(112) = p - 112
chr(113) = q - 113
chr(114) = r - 114
chr(115) = s - 115
chr(116) = t - 116
chr(117) = u - 117
chr(118) = v - 118
chr(119) = w - 119
chr(120) = x - 120

chr(121) = y - 121
chr(122) = z - 122
chr(123) = { - 123
chr(124) = | - 124
chr(125) = } - 125
chr(126) = ~ - 126
chr(127) = - 127

String Functions chr()

Subhendu Mohapatra

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ord(): the ASCII value of the first character in a given string

Example 1: Getting ASCII Value of Special Characters

Example 2: Converting First Character of a String to ASCII

Subhendu Mohapatra