Php determines that the string contains the specified character-PHP source code

Source: Internet
Author: User
Tags ereg
The following is the php code that uses a regular expression to determine whether a string contains a specified character. The ereg function is used to calculate the following. The regular expression is used to determine the php code of a string containing the specified character, mainly used the ereg function to sign

Script ec (2); script

// Instance 1

The Code is as follows:
$ String = "I am abc ";
If (ereg ("www.111cn.net", $ string) echo "'abc' is true

";
If (ereg ("^ abc", $ string) echo "'^ abc' is true

";
If (ereg ("abc $", $ string) echo "'abc $ 'is true ";

// Instance 2

The Code is as follows:
$ String = "this is a test. that is another test .";
Echo ereg_replace ("is", "was", $ string )."

";
Echo ereg_replace ("is ","Is", $ String )."

";
Echo ereg_replace ("test", "test", $ string );

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