PHP string Word end character for case-sensitive method, string case _php Tutorial

PHP string Word end character for case-sensitive method, string case

The example in this article describes how to implement case-by-word characters in a PHP string. Share to everyone for your reference. The implementation method is as follows:

First, requirements:
Given a string such as "A journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step." By PHP program processing becomes "A journey of, a thous and ' MileS ' must can ' T ' BegiN ' with A single SteP. "

Here's what to note:

1. If the last character of each word is uppercase, it becomes lowercase, and if lowercase, it becomes uppercase.
2. It is necessary to consider the conversion of this form like can ' t.
3, punctuation (only consider, ' ".; ) without change.

Second, the reference algorithm is as follows:

Copy the Code code as follows: <?php
function Convertlastchar ($STR) {
$MARKARR = Array (",", "'", "\" ",". ","; ");
$ret = "";
for ($i = 0, $j = strlen ($STR); $i < $j; $i + +) {
if ($i < $j-2) {
$afterStr = $str {$i + 1}. $STR {$i + 2};
} else if ($i < $j-1) {
$afterStr = $str {$i + 1}. " ";
}
if (In_array ($AFTERSTR, $MARKARR)
|| $i = = $j-1
|| $STR {$i + 1} = = "") {
$ret. = Strtoupper ($str {$i}) = = = $str {$i}
? Strtolower ($str {$i})
: Strtoupper ($str {$i});
} else {
$ret. = $str {$i};
}
}
return $ret;
}
?>

The test code is as follows:
Copy the Code code as follows: <?php

//test
$str 1 = "A journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step.";
$str 2 = "A Journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step. ";
$str 3 = "A Journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step. a";
$str 4 = "A Journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step. a B";
$str 5 = "A Journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step. a B '";
$str 6 = "A Journey of, a thousand ' miles ' must can ' t \" begin\ "with a single step. a b\" ";

echo "Source:
" . $str 1. "
Result
" . Convertlastchar ($str 1). "

";
echo "Source:
" . $str 2. "
Result
" . Convertlastchar ($str 2). "

";
echo "Source:
" . $str 3. "
Result
" . Convertlastchar ($str 3). "

";
echo "Source:
" . $str 4. "
Result
" . Convertlastchar ($str 4). "

";
echo "Source:
" . $str 5. "
Result
" . Convertlastchar ($str 5). "

";
echo "Source:
" . $str 6. "
Result
" . Convertlastchar ($str 6). "

";
?>

The results of the operation are as follows:
Copy the Code code as follows: Source:
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step.
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP.

Source
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step.
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP.

Source
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step. A
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP. A

Source
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step. A B
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP. A b

Source
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step. A B '
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP. A B '

Source
A journey of, a thousand ' miles ' must can ' t ' begin ' with a single step. A B "
Result
A journeY of, a thousand ' mileS ' must can ' T ' BegiN ' with A single SteP. A B "

I hope this article is helpful to everyone's PHP programming.

http://www.bkjia.com/PHPjc/909347.html www.bkjia.com true http://www.bkjia.com/PHPjc/909347.html techarticle PHP string Word end character implementation of the case-based method, the string case of the text of this article describes the PHP string Word to implement the case of the end of the method. Share for everyone to join us ...

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